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