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