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