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