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