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