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