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