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