[(0,1),(1,2),(0,3),(3,4),(1,5),(4,5),(5,6),(2,6),(3,7),(4,8),(7,9),(2,10),(10,11),(8,12),(6,13),(11,14),(10,15),(8,16),(12,17),(7,18),(9,19),(12,20),(9,21),(11,22)]
[(0,1),(1,2),(2,3),(2,4),(4,5),(5,6),(0,7),(6,8),(8,9),(5,10),(9,11),(6,11),(4,12),(1,12),(10,13),(12,14),(7,15),(10,16),(9,17),(8,18),(11,19),(3,20),(7,21),(3,22)]
