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