A_K7_2 :=
(M^(-10))*(1*M^10)
+ (L^1*M^(-8))*(-5*M^8 + 10*M^10 + 6*M^12 - 1*M^32 + 1*M^34)
+ (L^2*M^(-6))*(10*M^6 - 40*M^8 + 17*M^10 + 47*M^12 + 21*M^14 
    - 7*M^30 - 2*M^32 + 14*M^34 - 5*M^36)
+ (L^3*M^(-4))*(-10*M^4 + 60*M^6 - 92*M^8 - 44*M^10 + 76*M^12 
    + 119*M^14 + 56*M^16 - 28*M^28 - 21*M^30 + 44*M^32 + 41*M^34 
    - 46*M^36 + 10*M^38)
+ (L^4*M^(-2))*(5*M^2 - 40*M^4 + 114*M^6 - 94*M^8 - 78*M^10 
    - 4*M^12 + 105*M^14 + 196*M^16 + 126*M^18 - 84*M^26 - 56*M^28 
    + 93*M^30 + 124*M^32 - 15*M^34 - 116*M^36 + 64*M^38 - 10*M^40)
+ (L^5)*(-1 + 10*M^2 - 50*M^4 + 132*M^6 - 131*M^8 - 59*M^10 
    + 76*M^12 + 51*M^14 + 14*M^16 + 168*M^18 + 252*M^20 - 210*M^24 
    - 42*M^26 + 176*M^28 + 151*M^30 + 29*M^32 - 76*M^34 - 114*M^36 
    + 122*M^38 - 41*M^40 + 5*M^42)
+ (L^6*M^2)*(5*M^2 - 41*M^4 + 122*M^6 - 114*M^8 - 76*M^10 
    + 29*M^12 + 151*M^14 + 176*M^16 - 42*M^18 - 210*M^20 + 252*M^24 
    + 168*M^26 + 14*M^28 + 51*M^30 + 76*M^32 - 59*M^34 - 131*M^36 
    + 132*M^38 - 50*M^40 + 10*M^42 - 1*M^44)
+ (L^7*M^4)*(-10*M^4 + 64*M^6 - 116*M^8 - 15*M^10 + 124*M^12 
    + 93*M^14 - 56*M^16 - 84*M^18 + 126*M^26 + 196*M^28 + 105*M^30 
    - 4*M^32 - 78*M^34 - 94*M^36 + 114*M^38 - 40*M^40 + 5*M^42)
+ (L^8*M^6)*(10*M^6 - 46*M^8 + 41*M^10 + 44*M^12 - 21*M^14 
    - 28*M^16 + 56*M^28 + 119*M^30 + 76*M^32 - 44*M^34 - 92*M^36 
    + 60*M^38 - 10*M^40)
+ (L^9*M^8)*(-5*M^8 + 14*M^10 - 2*M^12 - 7*M^14 + 21*M^30 
    + 47*M^32 + 17*M^34 - 40*M^36 + 10*M^38)
+ (L^10*M^10)*(1*M^10 - 1*M^12 + 6*M^32 + 10*M^34 - 5*M^36)
+ (L^11*M^12)*(1*M^34);