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