r= x^24 + x^22 - x^18 - x^16 + x^12 - x^8 - x^6 + x^2 + 1 q= (x^34 - 2*x^31 + x^28 - x^20 + 2*x^17 - x^14 + x^6 + x^3 + 1)/3 P= 3*q_k28method66 v= x