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