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