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