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