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