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