[(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)]
[(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)]
