[(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),(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)]
