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