Let $L=\{f,g,R,S,c,d\}$ where $f$ is a unary function symbol, $g$ is a binary function symbol, $R$ is a binary relation symbol, $S$ is a ternary relation symbol, and $c$ and $d$ are constants. State whether or not each of the following are terms of $L.$ For those that are, prove it$-$ i$.$e$.,$ show how they are built up from the constants and variables. $($When citing the definition of a term, please be consistent with the way the clauses are numbered in the notes.$)$