[(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),(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)]
