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