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