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