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