x^4 - 11*x + 11 x^4 - x^3 - 15*x^2 - 18*x - 4 x^4 - 15*x^2 + 169 x^4 - 41*x - 123 x^4 - x^3 + 108*x^2 + 228*x + 1472 x^4 - x^3 - 56*x^2 - 141*x + 37