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