[(0,1),(0,2),(1,2),(2,3),(3,4),(1,4),(4,5),(3,5),(5,6),(6,7),(7,8),(6,9),(7,9),(9,10),(8,11),(8,12),(10,12),(11,13),(10,14),(11,14),(14,15),(13,16),(13,17),(15,17),(16,18),(17,18),(15,19),(16,19),(18,20),(19,21),(20,22),(20,23),(22,23),(22,24),(21,25),(12,25),(23,26),(26,27),(21,28),(27,29),(25,30),(30,31),(28,31),(26,32),(30,32),(29,33),(24,34),(33,34),(32,35),(33,36),(34,36),(35,37),(36,37),(37,38),(27,38),(24,39),(29,39),(38,40),(40,41),(28,42),(41,42),(40,43),(42,43),(31,44),(39,45),(43,46),(41,47),(35,48)]
[(0,1),(0,2),(1,3),(2,3),(1,4),(4,5),(3,5),(5,6),(4,6),(2,7),(6,7),(7,8),(8,9),(9,10),(8,10),(9,11),(11,12),(10,12),(12,13),(13,14),(14,15),(11,15),(15,16),(14,17),(16,18),(13,19),(17,19),(18,20),(18,21),(20,21),(16,22),(19,22),(20,23),(17,23),(22,24),(24,25),(21,25),(25,26),(26,27),(23,28),(27,28),(24,29),(29,30),(26,30),(28,31),(30,32),(31,32),(27,33),(32,33),(33,34),(31,35),(34,35),(35,36),(36,37),(34,37),(37,38),(38,39),(29,40),(36,40),(39,41),(38,41),(41,42),(42,43),(43,44),(42,45),(39,46),(43,47),(40,48)]
