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