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