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