[(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),(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)]
