The realization space is
  [1   1   0    1   1   0    2    0        1    1    1]
  [0   1   1   x1   0   0    0    1   x1 - 2    1   x1]
  [0   0   0    0   1   1   x1   -1        1   -1   -1]
in the multivariate polynomial ring in 1 variable over ZZ
within the vanishing set of the ideal
Ideal (-3*x1^2 + 7*x1 - 2)
avoiding the zero loci of the polynomials
RingElem[x1 - 1, 2, x1 + 2, x1 - 2, x1, x1 + 1, x1 - 3, 2*x1 - 1]