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