latex griechische buchstaben fett

\documentclass{article}
\usepackage{textgreek}
\begin{document}
\begin{tabular}{lll}
\textbf{\textAlpha}, \textbf{\textalpha}  & & 
\textbf{\textNu}, \textbf{\textnu} \\
\textbf{\textBeta}, \textbf{\textbeta}  & & 
\textbf{\textXi}, \textbf{\textxi} \\
\textbf{\textGamma}, \textbf{\textgamma} & & 
\textbf{\textOmikron}, \textbf{\textomikron}\\
\textbf{\textDelta}, \textbf{\textdelta} & & 
\textbf{\textPi}, \textbf{\textpi}\\
\textbf{\textEpsilon}, \textbf{\textepsilon}, 
\textbf{\straightepsilon}& & 
\textbf{\textRho}, \textbf{\textrho} \\
\textbf{\textZeta}, \textbf{\textzeta} & & 
\textbf{\textSigma}, \textbf{\textsigma}, \textbf{\textvarsigma} \\
\textbf{\textEta}, \textbf{\texteta}  & & 
\textbf{\textTau}, \textbf{\texttau}  \\
\textbf{\textTheta}, \textbf{\texttheta}, \textbf{\straighttheta},
 \textbf{\scripttheta}& & 
\textbf{\textUpsilon}, \textbf{\textupsilon}  \\
\textbf{\textIota}, \textbf{\textiota}  & & 
\textbf{\textPhi}, \textbf{\textphi}, \textbf{\straightphi}\\
\textbf{\textKappa}, \textbf{\textkappa} & & 
\textbf{\textChi}, \textbf{\textchi } \\
\textbf{\textLambda}, \textbf{\textlambda}& & 
\textbf{\textPsi} \textbf{\textpsi}  \\
\textbf{\textMu}, \textbf{\textmu}, \textbf{\textmugreek}  & & 
\textbf{\textOmega}, \textbf{\textomega}  \\
\end{tabular}
\end{document}