Question: How to extract the coefficient of a complicated polynomial?

Hi all guys, how can I extract the coefficient of order 6 of expand(SUMY-T) as below? I use the coeff but no use and I search last posts in mapleprime but no fit for my case, and substitute the parematers of a,b,c....

Thank you!

A[21] = 3/20-(1/20)*sqrt(5), A[31] = 0, A[32] = 3/20+(1/20)*sqrt(5), a[21] = 1/30-(1/75)*sqrt(5), a[31] = -1288/452405, a[32] = 98209/2714430-(1/75)*sqrt(5), b[1] = 1/24, b[2] = 1/16+(1/48)*sqrt(5), b[3] = 1/16-(1/48)*sqrt(5), bp[1] = 1/12, bp[2] = 5/24+(1/24)*sqrt(5), bp[3] = 5/24-(1/24)*sqrt(5), c[2] = 1/2-(1/10)*sqrt(5), c[3] = 1/2+(1/10)*sqrt(5)

T := (1/6)*h^3*G+(1/24)*h^4*((diff(y(x), x))*G[y]+F*G[z])+(1/120)*h^5*(G[yy]*(diff(y(x), x))^2+2*G[yz]*(diff(y(x), x))*F+F*G[y]+G[zz]*F^2+G*G[z])+(1/720)*h^6*(G[yyy]*(diff(y(x), x))^3+3*(diff(y(x), x))^2*G[yyz]*F+3*(diff(y(x), x))*G[yy]*F+3*(diff(y(x), x))*G[yzz]*F^2+3*G[yz]*(diff(y(x), x))*G+3*G[yz]*F^2+G[y]*G+G[zzz]*F^3+3*F*G[zz]*G+G[z]*((diff(y(x), x))*G[y]+F*G[z]))

NULL

SUMY := y(x)+h*(diff(y(x), x))+(1/2)*h^2*F+h^3*b[1]*G+h^3*b[2]*(G+((diff(y(x), x))*G[y]*c[2]+F*G[z]*c[2])*h+((1/2)*(diff(y(x), x))^2*G[yy]*c[2]^2+(diff(y(x), x))*F*G[yz]*c[2]^2+(1/2)*F^2*G[zz]*c[2]^2+(1/2)*F*G[y]*c[2]^2+G*G[z]*A[21])*h^2+((diff(y(x), x))*G*G[yz]*A[21]*c[2]+F*G*G[zz]*A[21]*c[2]+(1/6)*(diff(y(x), x))^3*G[yyy]*c[2]^3+(1/6)*F^3*G[zzz]*c[2]^3+(1/2)*(diff(y(x), x))*F*G[yy]*c[2]^3+G*G[y]*a[21]+(1/2)*(diff(y(x), x))^2*F*G[yyz]*c[2]^3+(1/2)*(diff(y(x), x))*F^2*G[yzz]*c[2]^3+(1/2)*F^2*G[yz]*c[2]^3)*h^3+((1/8)*F^2*G[yy]*c[2]^4+(1/2)*G^2*G[zz]*A[21]^2+(1/4)*F^3*G[yzz]*c[2]^4+(1/6)*(diff(y(x), x))^3*F*G[yyyz]*c[2]^4+(1/4)*(diff(y(x), x))^2*F^2*G[yyzz]*c[2]^4+(1/6)*(diff(y(x), x))*F^3*G[yzzz]*c[2]^4+(1/4)*(diff(y(x), x))^2*F*G[yyy]*c[2]^4+(1/2)*(diff(y(x), x))*F^2*G[yyz]*c[2]^4+(1/2)*G[yyz]*(diff(y(x), x))^2*G*A[21]*c[2]^2+(1/2)*G[zzz]*F^2*G*A[21]*c[2]^2+(1/24)*(diff(y(x), x))^4*G[yyyy]*c[2]^4+(1/24)*F^4*G[zzzz]*c[2]^4+G[yzz]*(diff(y(x), x))*F*G*A[21]*c[2]^2+(1/2)*F*G*G[yz]*A[21]*c[2]^2+(diff(y(x), x))*G*G[yy]*a[21]*c[2]+F*G*G[yz]*a[21]*c[2])*h^4+((1/120)*(diff(y(x), x))^5*G[yyyyy]*c[2]^5+(1/8)*F^3*G[yyz]*c[2]^5+(1/120)*F^5*G[zzzzz]*c[2]^5+(1/12)*F^4*G[yzzz]*c[2]^5+(1/12)*(diff(y(x), x))^2*F^3*G[yyzzz]*c[2]^5+(1/12)*(diff(y(x), x))^3*F^2*G[yyyzz]*c[2]^5+(1/24)*(diff(y(x), x))^4*F*G[yyyyz]*c[2]^5+(1/24)*(diff(y(x), x))*F^4*G[yzzzz]*c[2]^5+(1/8)*(diff(y(x), x))*F^2*G[yyy]*c[2]^5+(1/4)*(diff(y(x), x))*F^3*G[yyzz]*c[2]^5+(1/4)*(diff(y(x), x))^2*F^2*G[yyyz]*c[2]^5+(1/12)*(diff(y(x), x))^3*F*G[yyyy]*c[2]^5+G^2*G[yz]*A[21]*a[21]+(1/2)*G[yzz]*F^2*G*a[21]*c[2]^2+(1/2)*G[zzz]*F*G^2*A[21]^2*c[2]+(1/2)*F*G*G[yy]*a[21]*c[2]^2+(1/6)*G[zzzz]*F^3*G*A[21]*c[2]^3+(1/2)*G[yyy]*(diff(y(x), x))^2*G*a[21]*c[2]^2+(1/2)*G[yzz]*(diff(y(x), x))*G^2*A[21]^2*c[2]+(1/6)*G[yyyz]*(diff(y(x), x))^3*G*A[21]*c[2]^3+(1/2)*G[yzz]*F^2*G*A[21]*c[2]^3+(1/2)*G[yzzz]*(diff(y(x), x))*F^2*G*A[21]*c[2]^3+(1/2)*G[yyzz]*(diff(y(x), x))^2*F*G*A[21]*c[2]^3+(1/2)*G[yyz]*(diff(y(x), x))*F*G*A[21]*c[2]^3+G[yyz]*(diff(y(x), x))*F*G*a[21]*c[2]^2)*h^5+((1/6)*G[zzz]*G^3*A[21]^3+(1/16)*F^4*G[yyzz]*c[2]^6+(1/720)*F^6*G[zzzzzz]*c[2]^6+(1/48)*F^5*G[yzzzz]*c[2]^6+(1/2)*G^2*G[yy]*a[21]^2+(1/720)*G[yyyyyy]*(diff(y(x), x))^6*c[2]^6+(1/48)*F^3*G[yyy]*c[2]^6+(1/8)*(diff(y(x), x))*F^3*G[yyyz]*c[2]^6+(1/16)*(diff(y(x), x))^2*F^2*G[yyyy]*c[2]^6+(1/12)*(diff(y(x), x))*F^4*G[yyzzz]*c[2]^6+(1/8)*(diff(y(x), x))^2*F^3*G[yyyzz]*c[2]^6+(1/12)*(diff(y(x), x))^3*F^2*G[yyyyz]*c[2]^6+(1/48)*(diff(y(x), x))^4*F*G[yyyyy]*c[2]^6+(1/36)*F^3*G[yyyzzz]*(diff(y(x), x))^3*c[2]^6+(1/48)*F^4*G[yyzzzz]*(diff(y(x), x))^2*c[2]^6+(1/48)*F^2*G[yyyyzz]*(diff(y(x), x))^4*c[2]^6+(1/120)*F*G[yyyyyz]*(diff(y(x), x))^5*c[2]^6+(1/120)*F^5*G[yzzzzz]*(diff(y(x), x))*c[2]^6+(1/4)*G[yzzz]*F^3*G*A[21]*c[2]^4+(1/6)*G[yzzz]*F^3*G*a[21]*c[2]^3+(1/4)*G[zzzz]*F^2*G^2*A[21]^2*c[2]^2+(1/2)*G[yyz]*F^2*G*a[21]*c[2]^3+(1/4)*G[yzz]*F*G^2*A[21]^2*c[2]^2+(1/24)*G[zzzzz]*F^4*G*A[21]*c[2]^4+(1/8)*G[yyz]*F^2*G*A[21]*c[2]^4+(1/6)*G[yyyy]*(diff(y(x), x))^3*G*a[21]*c[2]^3+(1/4)*G[yyzz]*(diff(y(x), x))^2*G^2*A[21]^2*c[2]^2+(1/24)*G[yyyyz]*(diff(y(x), x))^4*G*A[21]*c[2]^4+G[yyz]*(diff(y(x), x))*G^2*A[21]*a[21]*c[2]+(1/4)*G[yyzzz]*(diff(y(x), x))^2*F^2*G*A[21]*c[2]^4+(1/6)*G[yyyzz]*(diff(y(x), x))^3*F*G*A[21]*c[2]^4+(1/2)*G[yzzz]*(diff(y(x), x))*F*G^2*A[21]^2*c[2]^2+(1/4)*G[yyyz]*(diff(y(x), x))^2*F*G*A[21]*c[2]^4+(1/2)*G[yyzz]*(diff(y(x), x))*F^2*G*A[21]*c[2]^4+G[yzz]*F*G^2*A[21]*a[21]*c[2]+(1/2)*G[yyyz]*(diff(y(x), x))^2*F*G*a[21]*c[2]^3+(1/2)*G[yyzz]*(diff(y(x), x))*F^2*G*a[21]*c[2]^3+(1/6)*G[yzzzz]*(diff(y(x), x))*F^3*G*A[21]*c[2]^4+(1/2)*G[yyy]*(diff(y(x), x))*F*G*a[21]*c[2]^3)*h^6+O(h^7))+h^3*b[3]*(G+((diff(y(x), x))*G[y]*c[3]+F*G[z]*c[3])*h+((1/2)*F*G[y]*c[3]^2+(1/2)*(diff(y(x), x))^2*G[yy]*c[3]^2+(1/2)*F^2*G[zz]*c[3]^2+G*G[z]*A[31]+G*G[z]*A[32]+(diff(y(x), x))*F*G[yz]*c[3]^2)*h^2+(G*G[y]*a[31]+(1/6)*(diff(y(x), x))^3*G[yyy]*c[3]^3+(1/6)*F^3*G[zzz]*c[3]^3+(1/2)*(diff(y(x), x))*F*G[yy]*c[3]^3+(1/2)*(diff(y(x), x))^2*F*G[yyz]*c[3]^3+(1/2)*(diff(y(x), x))*F^2*G[yzz]*c[3]^3+(1/2)*F^2*G[yz]*c[3]^3+G[y]*G[z]*(diff(y(x), x))*A[32]*c[2]+G[z]^2*F*A[32]*c[2]+G*G[y]*a[32]+F*G*G[zz]*A[32]*c[3]+(diff(y(x), x))*G*G[yz]*A[32]*c[3]+F*G*G[zz]*A[31]*c[3]+(diff(y(x), x))*G*G[yz]*A[31]*c[3])*h^3+((1/24)*(diff(y(x), x))^4*G[yyyy]*c[3]^4+(1/8)*F^2*G[yy]*c[3]^4+(1/4)*F^3*G[yzz]*c[3]^4+(1/24)*F^4*G[zzzz]*c[3]^4+(1/2)*G^2*G[zz]*A[31]^2+(1/2)*G^2*G[zz]*A[32]^2+G[yzz]*(diff(y(x), x))*F*G*A[31]*c[3]^2+G[yzz]*(diff(y(x), x))*F*G*A[32]*c[3]^2+G[y]*G[yz]*(diff(y(x), x))^2*A[32]*c[2]*c[3]+G[z]*G[yz]*F*(diff(y(x), x))*A[32]*c[2]^2+G[z]*G[zz]*F^2*A[32]*c[2]*c[3]+(1/2)*(diff(y(x), x))*F^2*G[yyz]*c[3]^4+(1/4)*(diff(y(x), x))^2*F*G[yyy]*c[3]^4+(1/2)*G[zzz]*F^2*G*A[31]*c[3]^2+(1/2)*F*G*G[yz]*A[31]*c[3]^2+F*G*G[yz]*a[31]*c[3]+(1/2)*G[yyz]*(diff(y(x), x))^2*G*A[31]*c[3]^2+(diff(y(x), x))*G*G[yy]*a[31]*c[3]+(1/2)*F*G*G[yz]*A[32]*c[3]^2+F*G*G[yz]*a[32]*c[3]+(1/2)*G[zzz]*F^2*G*A[32]*c[3]^2+(1/2)*G[z]*G[yy]*(diff(y(x), x))^2*A[32]*c[2]^2+(diff(y(x), x))*G*G[yy]*a[32]*c[3]+(1/2)*G[yyz]*(diff(y(x), x))^2*G*A[32]*c[3]^2+(1/2)*G[z]*G[zz]*F^2*A[32]*c[2]^2+(1/2)*G[y]*G[z]*F*A[32]*c[2]^2+G[y]*G[z]*F*a[32]*c[2]+(1/6)*(diff(y(x), x))^3*F*G[yyyz]*c[3]^4+(1/4)*(diff(y(x), x))^2*F^2*G[yyzz]*c[3]^4+(1/6)*(diff(y(x), x))*F^3*G[yzzz]*c[3]^4+G[y]^2*(diff(y(x), x))*a[32]*c[2]+G^2*G[zz]*A[31]*A[32]+G[z]^2*G*A[21]*A[32]+G[y]*G[zz]*F*(diff(y(x), x))*A[32]*c[2]*c[3]+G[z]*G[yz]*F*(diff(y(x), x))*A[32]*c[2]*c[3])*h^4+((1/2)*G[z]*G[yzz]*F^2*(diff(y(x), x))*A[32]*c[2]^3+(1/8)*(diff(y(x), x))*F^2*G[yyy]*c[3]^5+(1/4)*(diff(y(x), x))*F^3*G[yyzz]*c[3]^5+(1/4)*(diff(y(x), x))^2*F^2*G[yyyz]*c[3]^5+(1/12)*(diff(y(x), x))^3*F*G[yyyy]*c[3]^5+(1/24)*(diff(y(x), x))^4*F*G[yyyyz]*c[3]^5+(1/12)*(diff(y(x), x))^3*F^2*G[yyyzz]*c[3]^5+(1/12)*(diff(y(x), x))^2*F^3*G[yyzzz]*c[3]^5+(1/24)*(diff(y(x), x))*F^4*G[yzzzz]*c[3]^5+(1/2)*G[y]^2*F*a[32]*c[2]^2+(1/2)*G[z]*G[yy]*F*(diff(y(x), x))*A[32]*c[2]^3+G[y]*G*G[zz]*(diff(y(x), x))*A[32]^2*c[2]+(1/2)*G[y]*G[yyz]*(diff(y(x), x))^3*A[32]*c[2]*c[3]^2+(1/2)*G[z]*G[zzz]*F^3*A[32]*c[2]*c[3]^2+G[z]*G[yz]*F^2*a[32]*c[2]*c[3]+G[z]*G*G[zz]*F*A[32]^2*c[2]+(1/2)*G[z]*G[yz]*F^2*A[32]*c[2]*c[3]^2+(1/2)*G[y]*G[zz]*F^2*A[32]*c[2]^2*c[3]+(1/6)*G[z]*G[zzz]*F^3*A[32]*c[2]^3+G^2*G[yz]*A[32]*a[31]+G^2*G[yz]*A[31]*a[31]+G^2*G[yz]*A[31]*a[32]+(1/2)*G[yz]*G[yy]*(diff(y(x), x))^3*A[32]*c[2]^2*c[3]+G[y]*G[yz]*F*(diff(y(x), x))*a[32]*c[2]^2+(1/2)*G[y]*G[yy]*(diff(y(x), x))^2*a[32]*c[2]^2+(1/6)*(diff(y(x), x))^3*G*G[yyyz]*A[32]*c[3]^3+G[y]*G[yzz]*F*(diff(y(x), x))^2*A[32]*c[2]*c[3]^2+G[z]*G[yz]*(diff(y(x), x))*G*A[21]*A[32]*c[2]+G[y]*G[zz]*(diff(y(x), x))*G*A[31]*A[32]*c[2]+G[z]*G[yz]*(diff(y(x), x))*G*A[21]*A[32]*c[3]+G[z]*G[zz]*F*G*A[21]*A[32]*c[2]+G[z]*G[zz]*F*G*A[31]*A[32]*c[2]+G[z]*G[zz]*F*G*A[21]*A[32]*c[3]+G[y]*G[z]*G*A[32]*a[21]+(1/2)*G[yzz]*(diff(y(x), x))*G^2*A[31]^2*c[3]+(1/6)*G[yyyz]*(diff(y(x), x))^3*G*A[31]*c[3]^3+(1/2)*F*G*G[yy]*a[31]*c[3]^2+(1/6)*G[zzzz]*F^3*G*A[31]*c[3]^3+G[y]*G[z]*G*A[21]*a[32]+(1/120)*F^5*G[zzzzz]*c[3]^5+G[y]*G[yz]*F*(diff(y(x), x))*a[32]*c[2]*c[3]+(1/2)*G[z]*G[yyz]*F*(diff(y(x), x))^2*A[32]*c[2]*c[3]^2+(1/6)*F^3*G*G[zzzz]*A[32]*c[3]^3+(1/2)*F^2*G*G[yzz]*A[32]*c[3]^3+(1/2)*F^2*G*G[yzz]*a[32]*c[3]^2+(1/2)*(diff(y(x), x))^2*G*G[yyy]*a[32]*c[3]^2+(1/2)*(diff(y(x), x))*G^2*G[yzz]*A[32]^2*c[3]+G[z]*G[yzz]*F^2*(diff(y(x), x))*A[32]*c[2]*c[3]^2+(1/12)*F^4*G[yzzz]*c[3]^5+(1/8)*F^3*G[yyz]*c[3]^5+(1/120)*(diff(y(x), x))^5*G[yyyyy]*c[3]^5+(1/2)*G[z]*G[yz]*F^2*A[32]*c[2]^3+(1/2)*G[zz]^2*F^3*A[32]*c[2]^2*c[3]+G[y]*G[yy]*(diff(y(x), x))^2*a[32]*c[2]*c[3]+G[yz]^2*F*(diff(y(x), x))^2*A[32]*c[2]^2*c[3]+(diff(y(x), x))*F*G*G[yyz]*a[32]*c[3]^2+(1/2)*(diff(y(x), x))*F^2*G*G[yzzz]*A[32]*c[3]^3+(1/2)*(diff(y(x), x))*F*G*G[yyz]*A[32]*c[3]^3+(1/2)*(diff(y(x), x))^2*F*G*G[yyzz]*A[32]*c[3]^3+(1/2)*G[yyz]*(diff(y(x), x))*F*G*A[31]*c[3]^3+(1/2)*G[yyzz]*(diff(y(x), x))^2*F*G*A[31]*c[3]^3+(1/2)*G[yzzz]*(diff(y(x), x))*F^2*G*A[31]*c[3]^3+G[yyz]*(diff(y(x), x))*F*G*a[31]*c[3]^2+G[yzz]*(diff(y(x), x))*G^2*A[31]*A[32]*c[3]+G[zzz]*F*G^2*A[31]*A[32]*c[3]+3*G[yz]*G[zz]*F^2*(diff(y(x), x))*A[32]*c[2]^2*c[3]*(1/2)+(1/2)*F*G^2*G[zzz]*A[32]^2*c[3]+(1/2)*G[yyy]*(diff(y(x), x))^2*G*a[31]*c[3]^2+(1/2)*G[yzz]*F^2*G*A[31]*c[3]^3+(1/2)*G[yzz]*F^2*G*a[31]*c[3]^2+(1/2)*G[zzz]*F*G^2*A[31]^2*c[3]+(1/2)*F*G*G[yy]*a[32]*c[3]^2+(1/2)*G[z]*G[yyz]*F*(diff(y(x), x))^2*A[32]*c[2]^3+(1/6)*G[z]*G[yyy]*(diff(y(x), x))^3*A[32]*c[2]^3+(1/2)*G[y]*G[zz]*F^2*a[32]*c[2]^2+(1/2)*G[y]*G[yz]*F*(diff(y(x), x))*A[32]*c[2]^2*c[3]+G[z]*G[yy]*F*(diff(y(x), x))*a[32]*c[2]*c[3]+(1/2)*G[y]*G[zzz]*F^2*(diff(y(x), x))*A[32]*c[2]*c[3]^2+(1/2)*G[yy]*G[zz]*F*(diff(y(x), x))^2*A[32]*c[2]^2*c[3]+(1/2)*G[y]*G[yz]*F*(diff(y(x), x))*A[32]*c[2]*c[3]^2+G^2*G[yz]*A[32]*a[32])*h^5+((1/6)*G[z]*G[yzzz]*F^3*(diff(y(x), x))*A[32]*c[2]^4+(1/16)*F^4*G[yyzz]*c[3]^6+(1/2)*G[z]*G[yyz]*F^2*(diff(y(x), x))*A[32]*c[2]*c[3]^3+(1/2)*G^2*G[yy]*a[31]^2+(1/2)*G[y]*G[yzz]*F^2*(diff(y(x), x))*a[32]*c[2]^3+(1/6)*G[zz]*G[yyy]*F*(diff(y(x), x))^3*A[32]*c[2]^3*c[3]+(1/2)*(diff(y(x), x))*F*G^2*G[yzzz]*A[32]^2*c[3]^2+(1/6)*(diff(y(x), x))*F^3*G*G[yzzzz]*A[32]*c[3]^4+(1/4)*G[y]*G[yz]*F^2*A[32]*c[2]^2*c[3]^2+(1/36)*F^3*G[yyyzzz]*(diff(y(x), x))^3*c[3]^6+(1/48)*F^4*G[yyzzzz]*(diff(y(x), x))^2*c[3]^6+(1/6)*G^3*G[zzz]*A[32]^3+(diff(y(x), x))*G^2*G[yyz]*A[32]*a[32]*c[3]+(1/2)*(diff(y(x), x))*F*G*G[yyy]*a[32]*c[3]^3+(1/2)*G[y]*G[yz]*F^2*a[32]*c[2]^2*c[3]+(1/4)*G[yz]*G[yy]*F*(diff(y(x), x))^2*A[32]*c[2]^2*c[3]^2+(1/12)*(diff(y(x), x))^3*F^2*G[yyyyz]*c[3]^6+(1/8)*(diff(y(x), x))^2*F^3*G[yyyzz]*c[3]^6+(1/6)*G[zzz]*G^3*A[31]^3+(1/2)*G[zz]*G[yyz]*F^2*(diff(y(x), x))^2*A[32]*c[2]^3*c[3]+(1/4)*G[z]*G[yyzz]*F^2*(diff(y(x), x))^2*A[32]*c[2]^4+G[z]*G[zz]*G^2*A[21]*A[32]^2+3*G[yz]*G[yy]*F*(diff(y(x), x))^2*a[32]*c[2]^2*c[3]*(1/2)+(1/4)*(diff(y(x), x))^2*F*G*G[yyyz]*A[32]*c[3]^4+(1/4)*(diff(y(x), x))^2*F^2*G*G[yyzzz]*A[32]*c[3]^4+(1/2)*G[yz]*G[zz]*F^3*a[32]*c[2]^2*c[3]+G[y]*G*G[zzz]*F*(diff(y(x), x))*A[32]^2*c[2]*c[3]+(1/720)*F^6*G[zzzzzz]*c[3]^6+(1/720)*G[yyyyyy]*(diff(y(x), x))^6*c[3]^6+(1/2)*G[y]*G*G[zz]*F*A[32]^2*c[2]^2+(1/24)*G[z]*G[yyyy]*(diff(y(x), x))^4*A[32]*c[2]^4+(1/2)*(diff(y(x), x))*F^2*G*G[yyzz]*a[32]*c[3]^3+(1/4)*G[z]*G[yyy]*F*(diff(y(x), x))^2*A[32]*c[2]^4+(1/6)*G[z]*G[yyyz]*F*(diff(y(x), x))^3*A[32]*c[2]^4+(1/2)*G[y]*G[yzzz]*F^2*(diff(y(x), x))^2*A[32]*c[2]*c[3]^3+(1/6)*(diff(y(x), x))^3*G*G[yyyy]*a[32]*c[3]^3+(1/2)*G[yy]*G[yzz]*F*(diff(y(x), x))^3*A[32]*c[2]^2*c[3]^2+(1/48)*F^2*G[yyyyzz]*(diff(y(x), x))^4*c[3]^6+G[y]^2*G*a[21]*a[32]+(1/2)*G[y]*G[yyz]*F*(diff(y(x), x))^2*a[32]*c[2]^3+(1/2)*G[yz]^2*F^2*(diff(y(x), x))*A[32]*c[2]^3*c[3]+(1/4)*(diff(y(x), x))^2*G^2*G[yyzz]*A[32]^2*c[3]^2+(1/2)*G[y]*G[yy]*F*(diff(y(x), x))*a[32]*c[2]^2*c[3]+(1/2)*G[z]^2*G[zz]*F^2*A[32]^2*c[2]^2+(1/2)*G[yyzz]*(diff(y(x), x))*F^2*G*A[31]*c[3]^4+G[yyz]*(diff(y(x), x))*G^2*A[31]*a[31]*c[3]+(1/2)*G[y]*G[yzz]*F^2*(diff(y(x), x))*A[32]*c[2]*c[3]^3+(1/120)*F^5*G[yzzzzz]*(diff(y(x), x))*c[3]^6+(1/120)*F*G[yyyyyz]*(diff(y(x), x))^5*c[3]^6+(1/4)*G[yz]*G[zz]*F^3*A[32]*c[2]^2*c[3]^2+(1/2)*(diff(y(x), x))^2*F*G*G[yyyz]*a[32]*c[3]^3+G[yzz]*F*G^2*A[32]*a[31]*c[3]+(1/2)*G[zzzz]*F^2*G^2*A[31]*A[32]*c[3]^2+(1/6)*G[yzzzz]*(diff(y(x), x))*F^3*G*A[31]*c[3]^4+(1/2)*G[yyzz]*(diff(y(x), x))^2*G^2*A[31]*A[32]*c[3]^2+(1/2)*G[yyy]*(diff(y(x), x))*F*G*a[31]*c[3]^3+(1/2)*G[zz]^2*F^2*G*A[31]*A[32]*c[2]^2+G[z]*G[zz]*G^2*A[21]*A[31]*A[32]+G[yzz]*F*G^2*A[31]*a[32]*c[3]+(1/2)*G[yzz]*F*G^2*A[31]*A[32]*c[3]^2+(1/2)*G[z]*G[yzz]*F^3*A[32]*c[2]*c[3]^3+(1/2)*G[yz]*G[zzz]*F^3*(diff(y(x), x))*A[32]*c[2]^2*c[3]^2+G[z]*G[yzz]*(diff(y(x), x))*F*G*A[21]*A[32]*c[3]^2+G[z]*G[yzz]*(diff(y(x), x))*F*G*A[21]*A[32]*c[2]^2+G[z]*G[zzz]*F^2*G*A[31]*A[32]*c[2]*c[3]+G[zz]*G[yz]*(diff(y(x), x))*F*G*A[31]*A[32]*c[2]^2+G[y]*G[yzz]*(diff(y(x), x))^2*G*A[31]*A[32]*c[2]*c[3]+(1/2)*G[y]*G[yzz]*F^2*(diff(y(x), x))*A[32]*c[2]^2*c[3]^2+(1/4)*G[zzzz]*F^2*G^2*A[31]^2*c[3]^2+(1/2)*G[yyz]*F^2*G*a[31]*c[3]^3+(1/8)*G[yyz]*F^2*G*A[31]*c[3]^4+(1/4)*G[yzz]*F*G^2*A[31]^2*c[3]^2+(1/2)*G[y]^2*G[zz]*(diff(y(x), x))^2*A[32]^2*c[2]^2+(1/6)*G[y]*G[yyy]*(diff(y(x), x))^3*a[32]*c[2]^3+(1/6)*G[y]*G[yyyz]*(diff(y(x), x))^4*A[32]*c[2]*c[3]^3+G[yz]^2*F^2*(diff(y(x), x))*a[32]*c[2]^2*c[3]+(1/2)*G[yy]*G[zz]*F^2*(diff(y(x), x))*A[32]*c[2]^3*c[3]+(1/2)*G[y]*G[yy]*F*(diff(y(x), x))*a[32]*c[2]^3+(1/2)*G[yz]*G[yyz]*F*(diff(y(x), x))^3*A[32]*c[2]^2*c[3]^2+(1/4)*G[zz]*G[yyz]*F^2*(diff(y(x), x))^2*A[32]*c[2]^2*c[3]^2+(1/8)*G[z]*G[yy]*F^2*A[32]*c[2]^4+(1/2)*G[z]*G[yyy]*F*(diff(y(x), x))^2*a[32]*c[2]*c[3]^2+(1/2)*G[zzz]*G^3*A[31]*A[32]^2+G^2*G[yy]*a[31]*a[32]+(1/2)*G[y]*G[yyz]*F*(diff(y(x), x))^2*A[32]*c[2]*c[3]^3+(1/12)*(diff(y(x), x))*F^4*G[yyzzz]*c[3]^6+(1/2)*G[zzz]*G^3*A[31]^2*A[32]+(1/4)*G[yy]*G[zzz]*F^2*(diff(y(x), x))^2*A[32]*c[2]^2*c[3]^2+F*G^2*G[yzz]*A[32]*a[32]*c[3]+(1/6)*G[yz]*G[zzz]*F^3*(diff(y(x), x))*A[32]*c[2]^3*c[3]+(1/48)*(diff(y(x), x))^4*F*G[yyyyy]*c[3]^6+(1/8)*(diff(y(x), x))*F^3*G[yyyz]*c[3]^6+(1/16)*(diff(y(x), x))^2*F^2*G[yyyy]*c[3]^6+G[y]*G[z]*G[zz]*F*(diff(y(x), x))*A[32]^2*c[2]^2+G[yzz]*F*G^2*A[31]*a[31]*c[3]+(1/2)*G[yzzz]*(diff(y(x), x))*F*G^2*A[31]^2*c[3]^2+2*G[z]*G[yz]*G*F*A[32]*a[32]*c[2]+(1/2)*G[y]*G[yzz]*F^2*(diff(y(x), x))*a[32]*c[2]*c[3]^2+(1/2)*G[zz]*G[yzz]*F^3*(diff(y(x), x))*A[32]*c[2]^3*c[3]+(1/2)*G*G[yy]*G[zz]*(diff(y(x), x))^2*A[32]^2*c[2]^2+(1/2)*G[z]*G[yy]*F^2*a[32]*c[2]*c[3]^2+(1/2)*G[z]*G[yz]*F*G*A[21]*A[32]*c[2]^2+G[y]*G[yz]*(diff(y(x), x))*G*A[32]*a[21]*c[3]+(1/2)*G[z]*G[zzz]*F^2*G*A[21]*A[32]*c[2]^2+(1/4)*G[yzzz]*F^3*G*A[31]*c[3]^4+(1/24)*G[zzzzz]*F^4*G*A[31]*c[3]^4+(1/6)*G[yzzz]*F^3*G*a[31]*c[3]^3+G[yz]^2*(diff(y(x), x))^2*G*A[21]*A[32]*c[2]*c[3]+(1/24)*(diff(y(x), x))^4*G*G[yyyyz]*A[32]*c[3]^4+(1/24)*G[z]*G[zzzz]*F^4*A[32]*c[2]^4+G[yz]*G[yzz]*F^2*(diff(y(x), x))^2*A[32]*c[2]^2*c[3]^2+(1/24)*F^4*G*G[zzzzz]*A[32]*c[3]^4+(1/2)*G[yy]^2*(diff(y(x), x))^3*a[32]*c[2]^2*c[3]+(1/2)*G[y]*G[yy]*F*(diff(y(x), x))*a[32]*c[2]*c[3]^2+(1/2)*G[yz]^2*F^2*(diff(y(x), x))*A[32]*c[2]^2*c[3]^2+(1/2)*G[y]*G[yyzz]*F*(diff(y(x), x))^3*A[32]*c[2]*c[3]^3+2*G[y]*G[yz]*G*(diff(y(x), x))*A[32]*a[32]*c[2]+(1/4)*G[yy]*G[yyz]*(diff(y(x), x))^4*A[32]*c[2]^2*c[3]^2+(1/2)*G[z]*G[zz]*G^2*A[21]^2*A[32]+(1/6)*G[yyyy]*(diff(y(x), x))^3*G*a[31]*c[3]^3+(1/4)*G[yyzz]*(diff(y(x), x))^2*G^2*A[31]^2*c[3]^2+(1/24)*G[yyyyz]*(diff(y(x), x))^4*G*A[31]*c[3]^4+(1/6)*G[z]*G[zzzz]*F^4*A[32]*c[2]*c[3]^3+(1/4)*G[y]*G[yyz]*F*(diff(y(x), x))^2*A[32]*c[2]^2*c[3]^2+G[y]*G[zz]*F*G*A[32]*a[21]*c[3]+(1/2)*G[yy]*G[zz]*(diff(y(x), x))^2*G*A[31]*A[32]*c[2]^2+(1/2)*G[z]*G[zzz]*F^2*G*A[21]*A[32]*c[3]^2+G[z]*G[yz]*F*G*A[21]*a[32]*c[3]+G[zz]^2*F^2*G*A[21]*A[32]*c[2]*c[3]+(1/2)*G[yy]*G[zz]*F^2*(diff(y(x), x))*a[32]*c[2]^2*c[3]+(1/2)*G[z]*G[yzz]*F^3*a[32]*c[2]*c[3]^2+(1/4)*G[y]*G[zzz]*F^3*A[32]*c[2]^2*c[3]^2+(1/4)*G[zz]*G[zzz]*F^4*A[32]*c[2]^2*c[3]^2+(1/2)*G[y]*G[yyy]*(diff(y(x), x))^3*a[32]*c[2]*c[3]^2+(1/2)*(diff(y(x), x))*F^2*G*G[yyzz]*A[32]*c[3]^4+G[yz]*G*G[zz]*F*(diff(y(x), x))*A[32]^2*c[2]^2+(1/6)*G[z]*G[yyyz]*F*(diff(y(x), x))^3*A[32]*c[2]*c[3]^3+(1/2)*G[yz]*G[yyz]*F*(diff(y(x), x))^3*A[32]*c[2]^3*c[3]+G[y]*G[zzz]*(diff(y(x), x))*F*G*A[31]*A[32]*c[2]*c[3]+2*G[zz]*G[yz]*(diff(y(x), x))*F*G*A[21]*A[32]*c[2]*c[3]+G[z]*G[yzz]*(diff(y(x), x))*F*G*A[31]*A[32]*c[2]*c[3]+G[z]*G[yz]*F*G*A[32]*a[21]*c[2]+G[y]*G[zz]*F*G*A[21]*a[32]*c[2]+(1/2)*G[z]*G[yz]*F*G*A[21]*A[32]*c[3]^2+(1/2)*G[y]*G[zz]*F*G*A[31]*A[32]*c[2]^2+G[z]*G[yz]*F*G*A[31]*a[32]*c[2]+(1/2)*G[z]*G[yyz]*(diff(y(x), x))^2*G*A[21]*A[32]*c[2]^2+G[z]*G[yy]*(diff(y(x), x))*G*A[32]*a[21]*c[2]+G[y]*G[yz]*(diff(y(x), x))*G*A[21]*a[32]*c[2]+G[yzzz]*(diff(y(x), x))*F*G^2*A[31]*A[32]*c[3]^2+G[z]*G[yz]*F*G*A[32]*a[31]*c[2]+(1/2)*G[z]*G[yyz]*F^2*(diff(y(x), x))*A[32]*c[2]^4+(1/2)*G[zz]*G[yzz]*F^3*(diff(y(x), x))*A[32]*c[2]^2*c[3]^2+(1/2)*G[z]*G[yyzz]*F^2*(diff(y(x), x))^2*A[32]*c[2]*c[3]^3+G[y]*G*G[yzz]*(diff(y(x), x))^2*A[32]^2*c[2]*c[3]+(1/2)*G[yz]*G[yzz]*F^2*(diff(y(x), x))^2*A[32]*c[2]^3*c[3]+(1/2)*G[yz]*G[yy]*F*(diff(y(x), x))^2*A[32]*c[2]^3*c[3]+(1/2)*G[z]*G[yzzz]*F^3*(diff(y(x), x))*A[32]*c[2]*c[3]^3+(1/48)*F^3*G[yyy]*c[3]^6+(1/48)*F^5*G[yzzzz]*c[3]^6+(1/2)*G^2*G[yy]*a[32]^2+(1/4)*G[z]*G[yzz]*F^3*A[32]*c[2]^4+(1/6)*G[zz]*G[zzz]*F^4*A[32]*c[2]^3*c[3]+G[z]*G*G[zzz]*F^2*A[32]^2*c[2]*c[3]+(1/2)*F^2*G*G[yyz]*a[32]*c[3]^3+(1/6)*G[y]*G[zzzz]*F^3*(diff(y(x), x))*A[32]*c[2]*c[3]^3+(1/6)*(diff(y(x), x))^3*F*G*G[yyyzz]*A[32]*c[3]^4+(1/6)*G[yz]*G[yyy]*(diff(y(x), x))^4*A[32]*c[2]^3*c[3]+(1/2)*G[y]*G[yz]*F^2*a[32]*c[2]^3+(1/2)*G*G[zz]^2*F^2*A[32]^2*c[2]^2+(1/2)*G[yz]*G[zz]*F^3*A[32]*c[2]^3*c[3]+G[z]*G[yyz]*F^2*(diff(y(x), x))*a[32]*c[2]*c[3]^2+G[y]*G[yyz]*F*(diff(y(x), x))^2*a[32]*c[2]*c[3]^2+(1/4)*F^3*G*G[yzzz]*A[32]*c[3]^4+G[z]*G*G[yzz]*F*(diff(y(x), x))*A[32]^2*c[2]*c[3]+(1/6)*G[yyyzz]*(diff(y(x), x))^3*F*G*A[31]*c[3]^4+(1/4)*G[yyzzz]*(diff(y(x), x))^2*F^2*G*A[31]*c[3]^4+(1/2)*G[yyzz]*(diff(y(x), x))*F^2*G*a[31]*c[3]^3+(1/2)*G[yyyz]*(diff(y(x), x))^2*F*G*a[31]*c[3]^3+(1/4)*G[yyyz]*(diff(y(x), x))^2*F*G*A[31]*c[3]^4+G[yyz]*(diff(y(x), x))*G^2*A[32]*a[31]*c[3]+G[yyz]*(diff(y(x), x))*G^2*A[31]*a[32]*c[3]+G[y]*G[yz]*(diff(y(x), x))*G*A[32]*a[31]*c[2]+(1/2)*G[z]*G[yyz]*(diff(y(x), x))^2*G*A[21]*A[32]*c[3]^2+G[y]*G[yz]*(diff(y(x), x))*G*A[31]*a[32]*c[2]+G[z]*G[yy]*(diff(y(x), x))*G*A[21]*a[32]*c[3]+(1/6)*F^3*G*G[yzzz]*a[32]*c[3]^3+(1/4)*F^2*G^2*G[zzzz]*A[32]^2*c[3]^2+(1/4)*F*G^2*G[yzz]*A[32]^2*c[3]^2+(1/8)*F^2*G*G[yyz]*A[32]*c[3]^4+(1/6)*G[y]*G[zzz]*F^3*a[32]*c[2]^3)*h^6+O(h^7))

coeff(SUMY, h, 6)

Error, unable to compute coeff

NULL

NULL

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