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