[(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)]
[(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)]
