[(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)]
[(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)]
