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