The realization space is
  [1   0   1   2   0   1    1    0    1    2]
  [0   1   1   1   0   0    0    1    1    1]
  [0   0   0   0   1   1   x1   -1   -1   -2]
in the multivariate polynomial ring in 1 variable over ZZ
within the vanishing set of the ideal
Ideal (8*x1^2 + 4*x1 - 12)
avoiding the zero loci of the polynomials
RingElem[2, x1 + 1, 3, 2*x1 + 1, x1, x1 + 2, x1 - 1, 2*x1 - 1]