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