The realization space is
  [1   0   1        1   0   1    0   1         1         1]
  [0   1   1   x1 - 2   0   0    1   1    x1 - 2   -x1 + 2]
  [0   0   0        0   1   1   -1   1   -x1 + 2        x1]
in the multivariate polynomial ring in 1 variable over ZZ
avoiding the zero loci of the polynomials
RingElem[x1 - 2, 2, x1 - 1, x1 - 4, x1, x1 - 3]