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