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