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