[(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),(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)]
