[4i] p s [4s]--[3u] o s [3s]--a p [2p] i y [2p]--y u [2i] o p [5d]-i y- [4s] s p s-s - [3o] o u p-p - [2y] u y u y i [2p]- o-u-y-[4s] s p s - p-[3d] p p---[2y] u y u y i [2p]-o- u-y-[2d] d s d-d - [3p] p o p-p---[4i]- y-[2o] - p [3p]-- [2d] d s d- d - [3p] p o p- p---[4i]-y- [2o] - p [3p]-- [2d] d s d-d d- [3g] f d s d p p - [4d] d p p--- 2--[3p]-- [2d] d s d-d - [3p] p o p-p--- [4i]-y- [2o] - p [3p]-- [3s] s p s