d5s2d^{5} s^{2}d5s2
d9s2d^{9} s^{2}d9s2
d10s1\mathrm{d}^{10} \mathrm{s}^{1}d10s1
f13 s2\mathrm{f}^{13} \mathrm{~s}^{2}f13 s2