The realization space is
  [1   1    1   0   0   1   1    0    1    1]
  [0   1   -1   1   0   0   1   x1   x1   x1]
  [0   0    0   0   1   1   2    1    1    2]
in the multivariate polynomial ring in 1 variable over ZZ
within the vanishing set of the ideal
Ideal (-2*x1^3 + 6*x1^2 - 4*x1)
avoiding the zero loci of the polynomials
RingElem[x1, x1 - 1, x1 + 1, 2, 2*x1 - 1]