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[(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)]
