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