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