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