[(0,1),(0,2),(2,3),(3,4),(2,5),(3,6),(6,7),(4,8),(5,8),(8,9),(6,10),(10,11),(1,12),(12,13),(1,13),(11,14),(9,14),(5,15),(7,16),(13,17),(16,18),(15,19),(4,20),(7,21),(21,22),(19,23),(16,24),(15,25),(17,26),(9,27),(20,27),(12,28),(18,28),(26,29),(18,30),(25,31),(23,32),(19,33),(14,34),(11,35),(10,36),(27,37),(26,38),(20,39),(24,40),(22,41),(25,42),(24,43),(23,44),(22,45),(21,46),(28,47),(17,48)]
[(0,1),(0,2),(1,2),(1,3),(3,4),(4,5),(5,6),(4,6),(5,7),(6,8),(7,8),(8,9),(2,10),(10,11),(9,12),(7,13),(12,13),(11,14),(14,15),(14,16),(13,17),(17,18),(10,19),(11,20),(17,21),(16,22),(19,23),(18,24),(20,25),(9,25),(23,26),(24,27),(22,28),(20,29),(28,30),(27,31),(3,32),(24,33),(18,34),(15,35),(23,36),(22,37),(12,38),(28,39),(27,40),(25,41),(21,42),(26,43),(21,44),(16,45),(15,46),(26,47),(19,48)]
