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