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