[(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)]
[(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)]
