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