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