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