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