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