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