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