A_K7_99 :=
(M^(-10))*(-1*M^10)
+ (L^1*M^8)*(-1*M^6 + 5*M^8 - 10*M^10 + 3*M^12 - 1*M^14)
+ (L^2*M^26)*(1*M^4 + 2*M^8 - 7*M^10 + 4*M^12 - 7*M^14 + 2*M^16)
+ (L^3*M^44)*(1 - 5*M^2 + 10*M^4 - 3*M^6 + 1*M^8 - 1*M^10 
    + 3*M^12 - 10*M^14 + 5*M^16 - 1*M^18)
+ (L^4*M^62)*(-2*M^2 + 7*M^4 - 4*M^6 + 7*M^8 - 2*M^10 - 1*M^14)
+ (L^5*M^80)*(1*M^4 - 3*M^6 + 10*M^8 - 5*M^10 + 1*M^12)
+ (L^6*M^98)*(1*M^8);