\documentclass{article}
\usepackage[T1,LGR]{fontenc}
\usepackage[english]{babel}
%\usepackage{amsmath}
\usepackage{ucs}
%\usepackage{unicode}
%\usepackage{textcomp}
%\usepackage{tipa}
\begin{document}


\begin{table}
\begin{center}
\begin{tabular}{lccc}
LaTeX Command             & Decimal & Hex     & actual symbol\\
\verb#\OE#                & 338     & 0x152   & \OE\\
\verb#\oe#                & 339     & 0x153   & \oe\\
\verb#\textGamma#         & 915     & 0x393   & \textGamma\\
\verb#\textDelta#         & 916     & 0x394   & \textDelta\\
\verb#\textTheta#         & 920     & 0x398   & \textTheta\\
\verb#\textLambda#        & 923     & 0x39B   & \textLambda\\
\verb#\textXi#            & 926     & 0x39E   & \textXi\\
\verb#\textPi#            & 928     & 0x3A1   & \textPi\\
\verb#\textSigma#         & 931     & 0x3A3   & \textSigma\\
\verb#\textPhi#           & 934     & 0x3A6   & \textPhi\\
\verb#\textPsi#           & 936     & 0x3A8   & \textPsi\\
\verb#\textOmega#         & 937     & 0x3A9   & \textOmega\\
\verb#\textalpha#         & 945     & 0x3B1   & \textalpha\\
\verb#\textbeta#          & 946     & 0x3B2   & \textbeta\\
\verb#\textgamma#         & 947     & 0x3B3   & \textgamma\\
\verb#\textdelta#         & 948     & 0x3B4   & \textdelta\\
\verb#\textepsilon#       & 949     & 0x3B5   & \textepsilon\\
\verb#\textzeta#          & 950     & 0x3B6   & \textzeta\\
\verb#\texteta#           & 951     & 0x3B7   & \texteta\\
\verb#\textiota#          & 953     & 0x3B9   & \textiota\\
\verb#\textkappa#         & 954     & 0x3BA   & \textkappa\\
\verb#\textlambda#        & 955     & 0x3BB   & \textlambda\\
\verb#\textmu#            & 956     & 0x3BC   & \textmu\\
\verb#\textnu#            & 957     & 0x3BD   & \textnu\\
\verb#\textpi#            & 960     & 0x3C0   & \textpi\\
\verb#\textsigma#         & 963     & 0x3C3   & \textsigma\\
\verb#\texttau#           & 964     & 0x3C4   & \texttau\\
\verb#\textchi#           & 967     & 0x3C7   & \textchi\\
\verb#\textpsi#           & 968     & 0x3C8   & \textpsi\\
\end{tabular}
\end{center}
\caption{Testing Greek}
\end{table}

\end{document}
