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