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