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