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