r= x^48 + x^42 - x^30 - x^24 - x^18 + x^6 + 1 q= ( x^94 + 2*x^92 + x^90 + x^4 - 2*x^2 + 1 ) / 4 P= x^47 + 2*x^46 + x^45 + x^2 - 2*x + 1 v= x^2