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