A_K5_22 :=
(M^60)*(-1*M^16)
+ (L^1*M^48)*(1*M^8 - 1*M^10 + 3*M^12 - 7*M^14 + 1*M^16)
+ (L^2*M^36)*(1*M^2 - 3*M^4 + 7*M^6 - 1*M^8 - 6*M^12)
+ (L^3*M^24)*(6*M^4 + 1*M^8 - 7*M^10 + 3*M^12 - 1*M^14)
+ (L^4*M^12)*(-1 + 7*M^2 - 3*M^4 + 1*M^6 - 1*M^8)
+ (L^5)*(1);