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