[ Eq(1*x1 + 1*x2 + 1*x3 + 1*x4 + 1*x5 + 1*x6 + 1*x7 + 1*x8 + 1*x9 + 1*x10 + 1*x11 + 1*x12, k36),
  Eq(2*x1 + 1*x2 + 1*x3 + 1*x5 + 2*x7 + 2*x9 + 1*x10 + 2*x12 + 1*x13, k37) ]