[(0,1),(1,2),(0,3),(3,4),(4,5),(2,6),(1,6),(2,7),(7,8),(3,9),(4,9),(5,10),(7,11),(5,12),(11,12),(9,13),(6,14),(8,15),(14,16),(15,16),(14,17),(11,17),(13,18),(10,19),(17,20),(15,21),(18,22),(12,23),(10,24),(8,25),(18,26),(16,27),(13,28)]
[(0,1),(1,2),(2,3),(3,4),(4,5),(0,5),(5,6),(2,7),(6,8),(1,8),(8,9),(7,10),(9,11),(3,11),(9,12),(12,13),(13,14),(6,14),(11,15),(15,16),(10,16),(14,17),(12,18),(17,19),(18,20),(15,21),(4,22),(18,23),(17,24),(10,25),(13,26),(7,27),(16,28)]
