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