\begin{longtable}{>{\footnotesize}p{15mm}>{\footnotesize}p{15mm}>{\footnotesize}p{95mm}}
\toprule
xa   & \textbackslash xa   & \textbackslash alpha \\
xb   & \textbackslash xb   & \textbackslash beta \\
     & \textbackslash bsk  & \textbackslash bigskip \\
     &                     & \textbackslash bigskip{\AutoCompRet} \\
xch  & \textbackslash xch  & \textbackslash chi \\
xd   & \textbackslash xd   & \textbackslash delta \\
xcd  & \textbackslash xcd  & \textbackslash Delta \\
xe   & \textbackslash xe   & \textbackslash epsilon \\
xet  & \textbackslash xet  & \textbackslash eta \\
xg   & \textbackslash xg   & \textbackslash gamma \\
xcg  & \textbackslash xcg  & \textbackslash Gamma \\
     &                     & \textbackslash hskip \\
     &                     & \textbackslash indent \\
     &                     & \textbackslash input \\
xio  & \textbackslash xio  & \textbackslash iota \\
xl   & \textbackslash xl   & \textbackslash lambda \\
xcl  & \textbackslash xcl  & \textbackslash Lambda \\
     & \textbackslash msk  & \textbackslash medskip \\
     &                     & \textbackslash medskip{\AutoCompRet} \\
xm   & \textbackslash xm   & \textbackslash mu \\
     &                     & \textbackslash noindent \\
xn   & \textbackslash xn   & \textbackslash nu \\
xo   & \textbackslash xo   & \textbackslash omega \\
xco  & \textbackslash xco  & \textbackslash Omega \\
     &                     & \textbackslash par \\
xcph & \textbackslash xcph & \textbackslash Phi \\
xph  & \textbackslash xph  & \textbackslash phi \\
xp   & \textbackslash xp   & \textbackslash pi \\
xcp  & \textbackslash xcp  & \textbackslash Pi \\
xcps & \textbackslash xcps & \textbackslash Psi \\
xps  & \textbackslash xps  & \textbackslash psi \\
xr   & \textbackslash xr   & \textbackslash rho \\
     &                     & \textbackslash scriptsize \\
xs   & \textbackslash xs   & \textbackslash sigma \\
xcs  & \textbackslash xcs  & \textbackslash Sigma \\
     &                     & \textbackslash smallskip{\AutoCompRet} \\
     & \textbackslash ssk  & \textbackslash smallskip{\AutoCompRet} \\
xt   & \textbackslash xt   & \textbackslash tau \\
tex  & \textbackslash tex  & \textbackslash TeX \\
     &                     & \textbackslash TeX \\
texs & \textbackslash texs & \textbackslash TeX\textbackslash  \\
     &                     & \textbackslash TeX\textbackslash  \\
xth  & \textbackslash xth  & \textbackslash theta \\
xcth & \textbackslash xcth & \textbackslash Theta \\
xu   & \textbackslash xu   & \textbackslash upsilon \\
xcu  & \textbackslash xcu  & \textbackslash Upsilon \\
xve  & \textbackslash xve  & \textbackslash varepsilon \\
xvph & \textbackslash xvph & \textbackslash varphi \\
xvp  & \textbackslash xvp  & \textbackslash varpi \\
xvr  & \textbackslash xvr  & \textbackslash varrho \\
xvs  & \textbackslash xvs  & \textbackslash varsigma \\
xvth & \textbackslash xvth & \textbackslash vartheta \\
     &                     & \textbackslash vskip \\
xcx  & \textbackslash xcx  & \textbackslash Xi \\
xx   & \textbackslash xx   & \textbackslash xi \\
xz   & \textbackslash xz   & \textbackslash zeta \\
\bottomrule
\end{longtable}
