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