\usepackage[utf8]{inputenc}
\usepackage{alphabeta}

\begin{document}

\begin{verbatim}
   α     β     γ     min
A  2.24  7.62  1.41   γ
B  0.00  8.06  3.61   α
C  8.06  0.00  7.21   β
D  5.00  3.16  4.24   β
E  7.21  5.39  4.12   γ
F  8.49  7.28  5.00   γ
G  7.07  6.71  3.61   γ
H  3.61  7.21  0.00   γ
\end{verbatim}

\end{document}