A_K6_43 :=
(1*M^14)
+ (L^1)*(2*M^8 - 5*M^10 + 1*M^12 + 10*M^14 + 1*M^16 - 5*M^18 
    + 2*M^20)
+ (L^2)*(1*M^2 - 4*M^4 + 4*M^6 + 2*M^8 - 6*M^10 + 2*M^12 + 17*M^14 
    + 2*M^16 - 6*M^18 + 2*M^20 + 4*M^22 - 4*M^24 + 1*M^26)
+ (L^3)*(1 - 5*M^2 + 3*M^4 + 9*M^6 - 2*M^8 - 21*M^10 + 8*M^12 
    + 34*M^14 + 8*M^16 - 21*M^18 - 2*M^20 + 9*M^22 + 3*M^24 - 5*M^26 
    + 1*M^28)
+ (L^4)*(1*M^2 - 4*M^4 + 4*M^6 + 2*M^8 - 6*M^10 + 2*M^12 + 17*M^14 
    + 2*M^16 - 6*M^18 + 2*M^20 + 4*M^22 - 4*M^24 + 1*M^26)
+ (L^5)*(2*M^8 - 5*M^10 + 1*M^12 + 10*M^14 + 1*M^16 - 5*M^18 
    + 2*M^20)
+ (L^6)*(1*M^14);