x^4 - x^3 + x^2 - x + 1 x^4 - 2*x^3 + x^2 - 5 x^4 - x^3 - 4*x^2 + 14*x - 29 x^4 - x^2 + 20 x^4 + 37*x^2 + 441 x^4 - 2*x^3 - 6*x^2 + 7*x + 111 x^4 - x^3 - 99*x^2 + 99*x + 1901