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