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