[(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),(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)]
