[ Eq(x27, Piecewise((0, Lt(t, -1)), (Piecewise((0, Lt(t, 0)), (10, True)), True))),
  Eq(x28, Piecewise((0, Lt(t, -1)), (Piecewise((0, Lt(t, 0)), (10, True)), True))),
  Eq(x29, k27*x2),
  Eq(x30, k28*x6),
  Eq(x31, k29*x8),
  Eq(x32, k30*x10),
  Eq(x33, k31*x12),
  Eq(x34, k32*x24),
  Eq(x35, k33*x14),
  Eq(x36, k34*x16),
  Eq(x37, k35*x18),
  Eq(x38, k36*x20),
  Eq(x39, k37*x22),
  Eq(1*k38*x1 + 1*k38*x2 + 1*k38*x3, k38*k39),
  Eq(1*k38*x4 + 1*k38*x5 + 1*k38*x6, k38*k40),
  Eq(1*k38*x7 + 1*k38*x8, k38*k41),
  Eq(1*k38*x9 + 1*k38*x10, k38*k42),
  Eq(1*k38*x11 + 1*k38*x12, k38*k43),
  Eq(1*k38*x13 + 1*k38*x14, k38*k44),
  Eq(1*k38*x15 + 1*k38*x16, k38*k45),
  Eq(1*k38*x17 + 1*k38*x18, k38*k46),
  Eq(1*k38*x19 + 1*k38*x20, k38*k47),
  Eq(1*k38*x21 + 1*k38*x22, k38*k48),
  Eq(1*k38*x23 + 1*k38*x24, k38*k49),
  Eq(1*k38*x25 + 1*k38*x26, k38*k50) ]