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