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