[(0,1),(0,2),(1,3),(3,4),(1,5),(5,6),(4,7),(3,8),(6,9),(2,10),(9,11),(7,11),(2,12),(12,13),(8,13),(13,14),(10,15),(5,16),(9,16),(14,17),(17,18),(15,19),(18,19),(19,20),(16,21),(18,22),(20,23),(7,24),(21,25),(6,25),(10,26),(8,27),(21,28),(20,29),(14,29),(28,30),(26,31),(31,32),(26,32),(32,33),(28,33),(23,34),(24,34),(24,35),(11,35),(30,36),(34,37),(33,37),(31,38),(38,39),(17,40),(25,41),(35,41),(22,42),(40,43),(22,43),(39,44),(4,45),(41,46),(45,47),(12,47),(29,48),(37,49),(48,50),(27,50),(43,51),(49,51),(40,52),(46,52),(50,53),(48,53),(30,54),(42,55),(44,56),(54,56),(52,57),(39,58),(46,58),(15,59),(38,60),(56,61),(23,62),(53,63),(42,64),(55,65),(27,66),(36,67),(55,68),(47,69),(36,70),(57,71),(57,72),(45,73),(58,74),(49,75),(51,76),(44,77),(54,78)]
[(0,1),(1,2),(1,3),(3,4),(2,4),(3,5),(5,6),(5,7),(7,8),(0,9),(8,9),(6,10),(7,11),(6,12),(9,12),(2,13),(4,14),(11,15),(15,16),(15,17),(17,18),(10,19),(19,20),(13,20),(18,21),(16,22),(18,22),(21,23),(10,24),(19,24),(23,25),(14,25),(11,26),(20,27),(17,28),(27,28),(13,29),(16,29),(28,30),(12,30),(8,31),(31,32),(30,32),(26,33),(25,34),(34,35),(35,36),(14,37),(36,38),(23,38),(36,39),(37,39),(22,40),(31,41),(35,42),(29,43),(38,44),(27,44),(42,45),(41,46),(26,47),(33,48),(21,48),(24,49),(41,49),(32,50),(43,50),(37,51),(44,52),(49,53),(47,53),(47,54),(53,54),(52,55),(39,56),(45,57),(56,57),(56,58),(54,59),(55,60),(51,61),(46,62),(43,63),(34,64),(58,65),(40,66),(52,67),(45,68),(42,69),(55,70),(48,71),(58,72),(57,73),(50,74),(40,75),(33,76),(51,77),(46,78)]
