[(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),(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)]
