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