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