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