advent18/advent18x4.dot

   1 graph Cave {
   2 0 -- a [ label = ", 1"];
   3 0 -- e [ label = ", 1"];
   4 1 -- c [ label = "b, 2"];
   5 1 -- h [ label = "e, 4"];
   6 2 -- m [ label = "n, 4"];
   7 2 -- n [ label = "kl, 4"];
   8 3 -- i [ label = "h, 2"];
   9 3 -- k [ label = "g, 7"];
  10 a -- b [ label = ", 1"];
  11 a -- e [ label = ", 2"];
  12 b -- d [ label = "c, 2"];
  13 c -- h [ label = "be, 6"];
  14 c -- l [ label = "ij, 4"];
  15 d -- g [ label = "f, 2"];
  16 e -- f [ label = "d, 3"];
  17 i -- k [ label = "gh, 9"];
  18 j -- k [ label = ", 1"];
  19 m -- n [ label = "kln, 8"];
  20 n -- o [ label = "m, 2"];
  21
  22 }