[ x^4 - x^3 + 5*x^2 + 4*x + 16, \
x^4 - x^3 - 6*x^2 + x + 1, \
x^4 - x^3 - 4*x + 1, \
x^4 - x^3 + 6*x^2 - 5*x + 8, \
x^4 - x^3 + 11*x^2 + x + 52, \
x^4 - x^3 - 2*x - 13 ]