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