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