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