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