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