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