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