{ 1*k49*x1 + 1*k49*x4 = k49*k50,
  1*k49*x2 + 1*k49*x6 = k49*k51,
  1*k49*x3 + 1*k49*x4 = k49*k52,
  1*k49*x5 + 1*k49*x6 = k49*k53,
  1*k49*x7 + 1*k49*x8 = k49*k54,
  1*k49*x9 + 1*k49*x10 = k49*k55,
  1*k49*x11 + 1*k49*x12 = k49*k56,
  1*k49*x14 + 1*k49*x15 = k49*k57,
  1*k49*x16 + 1*k49*x17 = k49*k58,
  1*k49*x18 + 1*k49*x19 = k49*k59,
  1*k49*x20 + 1*k49*x21 = k49*k60,
  1*k49*x22 + 1*k49*x23 = k49*k61,
  1*k49*x24 + 1*k49*x25 = k49*k62,
  1*k49*x26 + 1*k49*x27 = k49*k63,
  1*k49*x28 + 1*k49*x29 = k49*k64 }