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