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