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