[ Diff(x[1], t) = ((-1)*x[1]*k[3] + 1*x[4]*k[6] + (-1)*x[1]*k[8] + 1*x[5]*k[9] + (-1)*x[1]*k[10] + 1*x[6]*k[11] + (-1)*x[1]*k[12] + (-1)*x[1]*k[13] + (-1)*x[1]*k[14] + (-1)*x[1]*k[17] + 1*x[11]*k[18] + (-1)*x[1]*k[19] + 1*x[12]*k[20] + (-1)*x[1]*k[21] + 1*x[13]*k[22] + (-1)*x[1]*k[23] + 1*x[14]*k[24] + (-1)*x[1]*k[25] + (-1)*x[1]*k[26] + 1*x[16]*k[27] + (-1)*x[1]*k[28] + 1*x[17]*k[29] + 1*k[30]*x[7])/k[2],
  Diff(x[2], t) = (1*x[1]*k[3] + (-1)*x[2]*k[4] + (-1)*x[2]*k[7])/k[2],
  Diff(x[3], t) = (1*x[2]*k[4] + (-1)*x[3]*k[5])/k[2],
  Diff(x[4], t) = (1*x[3]*k[5] + (-1)*x[4]*k[6] + 1*x[2]*k[7])/k[2],
  Diff(x[5], t) = (1*x[1]*k[8] + (-1)*x[5]*k[9])/k[2],
  Diff(x[6], t) = (1*x[1]*k[10] + (-1)*x[6]*k[11])/k[2],
  Diff(x[7], t) = (1*x[1]*k[12] + (-1)*k[30]*x[7])/k[2],
  Diff(x[8], t) = (1*x[1]*k[14] + (-1)*x[8]*k[16])/k[2],
  Diff(x[9], t) = (1*x[1]*k[13] + (-1)*x[9]*k[15])/k[2],
  Diff(x[10], t) = (1*x[9]*k[15] + 1*x[8]*k[16] + 1*k[31]*x[15])/k[1],
  Diff(x[11], t) = (1*x[1]*k[17] + (-1)*x[11]*k[18])/k[2],
  Diff(x[12], t) = (1*x[1]*k[19] + (-1)*x[12]*k[20])/k[2],
  Diff(x[13], t) = (1*x[1]*k[21] + (-1)*x[13]*k[22])/k[2],
  Diff(x[14], t) = (1*x[1]*k[23] + (-1)*x[14]*k[24])/k[2],
  Diff(x[15], t) = (1*x[1]*k[25] + (-1)*k[31]*x[15])/k[2],
  Diff(x[16], t) = (1*x[1]*k[26] + (-1)*x[16]*k[27])/k[2],
  Diff(x[17], t) = (1*x[1]*k[28] + (-1)*x[17]*k[29])/k[2] ]