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