[ Eq(1*k1*x1 + 1*k1*x2 + 1*k1*x3 + 1*k1*x4 + 1*k1*x6, k1*k12),
  Eq(1*k1*x1 + 1*k1*x2 + 1*k1*x3 + 1*k1*x5 + 1*k1*x6 + 1*k1*x7, k1*k13),
  Eq(1*k1*x2 + 1*k1*x3 + 1*k1*x4 + 1*k1*x6 + 1*k1*x8, k1*k14),
  Eq(1*k1*x2 + 1*k1*x3 + 1*k1*x5 + 1*k1*x6 + 1*k1*x7 + 1*k1*x8, k1*k15),
  Eq(1*k1*x3 + 1*k1*x4 + 1*k1*x6 + 1*k1*x9 + 1*k1*x10, k1*k16),
  Eq(1*k1*x3 + 1*k1*x5 + 1*k1*x6 + 1*k1*x7 + 1*k1*x9 + 1*k1*x10, k1*k17) ]