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