one: (18744: 18741, 18742, 18743, 0)
one: (18745: 18741, 18742, 0, 0)
two: (18743: 18741, 18742, 0, 18745)
one: (18747: 18741, 0, 18746, 0)
one: (18750: 0, 18748, 18749, 0)
one: (18751: 18741, 0, 0, 0)
two: (18746: 18741, 0, 0, 18751)
two: (18742: 18741, 0, 18746, 18747)
one: (18753: 0, 0, 18752, 0)
one: (18754: 0, 18748, 0, 0)
two: (18749: 0, 18748, 0, 18754)
one: (18755: 0, 0, 0, 0)
two: (18752: 0, 0, 0, 18755)
two: (18748: 0, 0, 18752, 18753)
two: (18741: 0, 18748, 18749, 18750)
two: (18738: 18741, 18742, 18743, 18744)