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