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