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