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