[ x^4 - x^3 + 7*x^2 + 43*x + 47, \ x^4 - x^3 + 13*x^2 + 15*x - 9, \ x^4 - x^3 - 9*x^2 + 104*x + 587, \ x^4 + 7*x^2 + 900, \ x^4 - x^3 - 894*x^2 - 2660*x + 12661, \ x^4 - 134*x^2 - 1273*x + 871, \ x^4 - x^3 + 59*x^2 + 649*x - 1636 ]