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