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