[(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)]
[(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)]
