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