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