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