The realization space is
  [1   1   0   x1 - 1   0   1   1          0   x1 - 1   x1 - 1      1]
  [1   0   1    -2*x1   0   1   0         x1    -2*x1      -x1   2*x1]
  [0   0   0        0   1   1   1   2*x1 - 1      -x1      -x1     x1]
in the multivariate polynomial ring in 1 variable over ZZ
within the vanishing set of the ideal
Ideal (54*x1^8 - 171*x1^7 + 222*x1^6 - 153*x1^5 + 59*x1^4 - 12*x1^3 + x1^2)
avoiding the zero loci of the polynomials
RingElem[x1, 3*x1 - 1, 2*x1 - 1, x1 - 1, 2, 3*x1 - 2, 3*x1^2 - 3*x1 + 1, 5*x1^2 - 5*x1 + 1, 4*x1 - 1, 5*x1^2 - 4*x1 + 1]