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