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