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