r= x^40 + x^38 - x^34 - x^32 + x^28 + x^26 - x^22 - x^20 - x^18 + x^14 + x^12 - x^8 - x^6 + x^2 + 1 q= ( x^70 + 2*x^68 + x^66 + x^4 - 2*x^2 + 1 ) / 4 P= x^35 + 2*x^34 + x^33 + x^2 - 2*x + 1 v= x^2