f D f D f a d s [6p] - t u p [3a] - u O a [6s] - u f D f D f a d s [6p] - t u p [3a] - u s a [6p] - a s d [8f] - o g f [5d] - i f d [6s] - u d s [3a]---- f D f D f a d s [6p] - t u p [3a] - u O a [6s] - u f D f D f a d s [6p] - t u p [3a] - y s a [6p]