{ \cal { L } } ^ { \uppercase \expandafter { \romannumeral 1 } } = \mathrm { { t r a c e \ } } \left( F ^ { \mu \nu } F _ { \mu \nu } \right)  \rooster \peacock \llama \shrimp\stingray \giraffe\mathcal{F}\,_{\searrow }^{\nearrow } 
\begin{array}{l}
\mathcal{F}_{ld} \\ 
\stackrel{\downarrow }{\mathcal{F}}_{sd}
\end{array}