{ 1*k1*x1 + 1*k1*x2 = k1*k32,
  1*k1*x3 + 1*k1*x4 + 1*k1*x5 = k1*k33,
  1*k1*x6 + 1*k1*x7 + 1*k1*x8 = k1*k34,
  1*k1*x12 + 1*k1*x13 = k1*k35 }