[(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),(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)]
