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