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