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