The realization space is [1 0 1 1 1 1 0 2 0 1 1] [0 1 1 1 2*x1 - 1 2*x1 0 0 2 2*x1 - 1 2*x1] [0 0 0 1 2*x1 - 1 1 1 2*x1 - 1 1 x1 x1] in the multivariate polynomial ring in 1 variable over ZZ within the vanishing set of the ideal Ideal (4*x1^2 - 6*x1 + 3, 64*x1^5 - 224*x1^4 + 304*x1^3 - 208*x1^2 + 76*x1 - 12) avoiding the zero loci of the polynomials RingElem[x1, x1 - 1, 2*x1 - 1, 2, 4*x1^2 - 2*x1 + 1, 4*x1^2 - 6*x1 + 1, 2*x1^2 - 2*x1 + 1, 2*x1^2 - 3*x1 + 2, 4*x1 - 3, 2*x1 - 3, 4*x1^2 - 4*x1 + 3]