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