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