{ diff(x1, t) = 0,
  diff(x2, t) = 0,
  diff(x3, t) = (1*k22*x29*k22*k10/k22 + (-1)*x3*k22*k13 + 1*x4*k23*k16 + (-1)*k22*x3*k22*x30*k22*k7/k22 + (-1)*k22*x3*k22*x31*k22*k7/k22 + 1*k22*x9*k22*x36*k22*k5/k22 + (-1)*k22*x3*k22*x41*k22*k8/k22)/k22,
  diff(x4, t) = (1*x3*k22*k13 + (-1)*x4*k23*k16 + (-1)*x4*k23*k17 + 1*x5*k24*k15 + (-1)*x4*k23*x30*k22*k7 + (-1)*x4*k23*x31*k22*k7 + 1*x10*k23*x36*k22*k5 + (-1)*x4*k23*x41*k22*k8)/k23,
  diff(x5, t) = (1*x4*k23*k17 + (-1)*x5*k24*k15 + (-1)*x5*k24*x30*k22*k7 + (-1)*x5*k24*x31*k22*k7 + 1*x11*k24*x36*k22*k5 + (-1)*x5*k24*x41*k22*k8)/k24,
  diff(x6, t) = ((-1)*x6*k22*k13 + 1*x7*k23*k16 + (-1)*k22*x6*k22*x30*k22*k7/k22 + (-1)*k22*x6*k22*x31*k22*k7/k22 + 1*k22*x12*k22*x36*k22*k5/k22 + 1*k22*x3*k22*x41*k22*k8/k22 + (-1)*k22*x6*k22*x42*k22*k4/k22)/k22,
  diff(x7, t) = (1*x6*k22*k13 + (-1)*x7*k23*k16 + (-1)*x7*k23*k17 + 1*x8*k24*k15 + (-1)*x7*k23*x30*k22*k7 + (-1)*x7*k23*x31*k22*k7 + 1*x13*k23*x36*k22*k5 + 1*x4*k23*x41*k22*k8)/k23,
  diff(x8, t) = (1*x7*k23*k17 + (-1)*x8*k24*k15 + (-1)*x8*k24*x30*k22*k7 + (-1)*x8*k24*x31*k22*k7 + 1*x14*k24*x36*k22*k5 + 1*x5*k24*x41*k22*k8)/k24,
  diff(x9, t) = ((-1)*x9*k22*k14 + 1*x10*k23*k18 + 1*k22*x3*k22*x30*k22*k7/k22 + 1*k22*x3*k22*x31*k22*k7/k22 + (-1)*k22*x9*k22*x36*k22*k5/k22 + (-1)*k22*x9*k22*x41*k22*k9/k22)/k22,
  diff(x10, t) = (1*x9*k22*k14 + (-1)*x10*k23*k18 + (-1)*x10*k23*k15 + 1*x11*k24*k15 + 1*x4*k23*x30*k22*k7 + 1*x4*k23*x31*k22*k7 + (-1)*x10*k23*x36*k22*k5 + (-1)*x10*k23*x41*k22*k9)/k23,
  diff(x11, t) = (1*x10*k23*k15 + (-1)*x11*k24*k15 + 1*x5*k24*x30*k22*k7 + 1*x5*k24*x31*k22*k7 + (-1)*x11*k24*x36*k22*k5 + (-1)*x11*k24*x41*k22*k9)/k24,
  diff(x12, t) = ((-1)*x12*k22*k14 + 1*x13*k23*k18 + 1*k22*x6*k22*x30*k22*k7/k22 + 1*k22*x6*k22*x31*k22*k7/k22 + (-1)*k22*x12*k22*x36*k22*k5/k22 + 1*k22*x9*k22*x41*k22*k9/k22 + (-1)*k22*x12*k22*x42*k22*k4/k22)/k22,
  diff(x13, t) = (1*x12*k22*k14 + (-1)*x13*k23*k18 + (-1)*x13*k23*k15 + 1*x14*k24*k15 + 1*x7*k23*x30*k22*k7 + 1*x7*k23*x31*k22*k7 + (-1)*x13*k23*x36*k22*k5 + 1*x10*k23*x41*k22*k9)/k23,
  diff(x14, t) = (1*x13*k23*k15 + (-1)*x14*k24*k15 + 1*x8*k24*x30*k22*k7 + 1*x8*k24*x31*k22*k7 + (-1)*x14*k24*x36*k22*k5 + 1*x11*k24*x41*k22*k9)/k24,
  diff(x23, t) = (1*x5*k24*k11 + 1*x8*k24*k11 + 1*x11*k24*k11 + 1*x14*k24*k11 + 1*k1 + (-1)*x23*k23*k6)/k23,
  diff(x24, t) = (1*x23*k23*k6 + (-1)*k22*x24*k22*k2/k22)/k22,
  diff(x25, t) = (1*k22*x24*k22*k12/k22 + (-1)*k22*x25*k22*k3/k22)/k22,
  diff(x26, t) = (1*x5*k24*k11 + 1*x8*k24*k11 + 1*x11*k24*k11 + 1*x14*k24*k11 + 1*k1 + (-1)*x26*k23*k6)/k23,
  diff(x27, t) = (1*x26*k23*k6 + (-1)*k22*x27*k22*k2/k22)/k22,
  diff(x28, t) = (1*k22*x27*k22*k12/k22 + (-1)*k22*x28*k22*k3/k22)/k22,
  diff(x29, t) = 0/k22,
  diff(x30, t) = 0/k22,
  diff(x31, t) = 0/k22,
  diff(x32, t) = 0/k22,
  diff(x33, t) = 0/k22,
  diff(x34, t) = 0/k22,
  diff(x35, t) = 0/k22,
  diff(x36, t) = 0/k22,
  diff(x37, t) = 0/k22,
  diff(x38, t) = 0/k22,
  diff(x39, t) = 0/k22,
  diff(x40, t) = 0/k22,
  diff(x41, t) = 0/k22,
  diff(x42, t) = 0/k22 }