The realization space is
  [1   0   1        1   0   1       x2 - 2    0    1    1    1]
  [0   1   1   x2 - 1   0   0            0    1    1   -1   -1]
  [0   0   0        0   1   1   x1*x2 - x1   -1   x1    1   x2]
in the multivariate polynomial ring in 2 variables over ZZ
avoiding the zero loci of the polynomials
RingElem[x2 - 1, 2, x2, x1 + x2, x1 - x2, x1, x1 - x2 + 2, x1 + x2 - 2, x2 - 2, x1*x2 - x1 - x2^2 + 2*x2, 2*x1*x2 - 2*x1 - x2^2 + 2*x2, x1*x2 - x1 - x2 + 2, x1 + 1, x1 - 1, x1*x2 - x2 + 2, 2*x1*x2 - 2*x1 - x2 + 2]