A_K5_2 :=
(M^6)*(1*M^6)
+ (L^1*M^4)*(-3*M^4 + 5*M^6 + 4*M^8 + 1*M^18 - 1*M^20)
+ (L^2*M^2)*(3*M^2 - 10*M^4 + 12*M^8 + 10*M^10 + 4*M^16 - 6*M^20 
    + 2*M^22)
+ (L^3)*(-1 + 5*M^2 - 6*M^4 - 5*M^6 - 3*M^8 + 10*M^10 + 20*M^12 
    + 10*M^14 - 3*M^16 - 5*M^18 - 6*M^20 + 5*M^22 - 1*M^24)
+ (L^4*M^(-2))*(2*M^2 - 6*M^4 + 4*M^8 + 10*M^14 + 12*M^16 - 10*M^20 
    + 3*M^22)
+ (L^5*M^(-4))*(-1*M^4 + 1*M^6 + 4*M^16 + 5*M^18 - 3*M^20)
+ (L^6*M^(-6))*(1*M^18);