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