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