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