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