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