[(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),(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)]
