[(0,1),(0,2),(2,3),(3,4),(3,5),(1,5),(5,6),(1,7),(7,8),(2,8),(4,9),(8,10),(6,10),(6,11),(10,12),(11,13),(12,13),(13,14),(9,15),(14,15),(7,16),(16,17),(17,18),(16,18),(12,19),(18,19),(4,20),(20,21),(14,22),(11,23),(17,24),(23,25),(24,25),(22,26),(15,26),(24,27),(20,27),(22,28),(25,29),(19,30),(21,31),(21,32),(27,33),(26,34),(9,35),(23,36),(28,37),(28,38)]
[(0,1),(1,2),(2,3),(0,3),(3,4),(2,5),(4,6),(5,6),(1,7),(4,7),(5,8),(7,8),(6,9),(9,10),(10,11),(8,12),(11,13),(11,14),(13,15),(14,15),(12,16),(14,17),(9,18),(10,18),(18,19),(13,19),(15,20),(12,21),(16,22),(22,23),(21,24),(22,24),(23,25),(20,26),(17,26),(16,27),(19,27),(24,28),(25,29),(26,30),(21,31),(25,32),(28,33),(27,34),(23,35),(17,36),(20,37),(28,38)]
