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