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