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