[(0,1),(1,2),(0,2),(2,3),(1,3),(3,4),(4,5),(4,6),(5,7),(7,8),(7,9),(5,10),(10,11),(8,12),(12,13),(9,14),(8,15),(11,16),(10,16),(13,17),(13,18),(16,19),(12,19),(18,20),(15,20),(15,21),(9,22),(17,23),(19,23),(22,24),(21,25),(6,25),(21,26),(24,26),(25,27),(26,27),(14,28),(11,29),(28,29),(17,30),(29,30),(28,31),(27,32),(30,32),(6,33),(18,34),(14,35),(32,36),(31,37),(33,37),(22,38),(34,38),(38,39),(35,39),(36,40),(39,40),(40,41),(24,41),(36,42),(37,43),(42,43),(34,44),(44,45),(35,46),(45,46),(46,47),(20,47),(43,48),(42,49),(41,50),(47,51),(31,52),(33,53),(45,54),(48,55),(44,56),(48,57),(23,58)]
[(0,1),(1,2),(0,2),(1,3),(3,4),(2,4),(4,5),(3,5),(5,6),(6,7),(6,8),(7,9),(8,9),(9,10),(10,11),(8,11),(11,12),(7,12),(10,13),(12,13),(13,14),(14,15),(15,16),(14,17),(15,18),(18,19),(19,20),(18,20),(16,21),(21,22),(19,22),(21,23),(20,23),(22,24),(16,24),(17,25),(23,26),(25,26),(24,27),(26,28),(25,28),(28,29),(29,30),(29,31),(31,32),(30,32),(30,33),(17,33),(31,34),(32,34),(33,35),(27,35),(35,36),(34,36),(36,37),(27,38),(37,38),(37,39),(38,40),(39,41),(40,42),(42,43),(41,44),(43,44),(40,45),(39,46),(43,47),(46,48),(47,49),(42,50),(48,51),(48,52),(47,53),(45,54),(44,55),(41,56),(45,57),(46,58)]
