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