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