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