\begin{tabular}{|l|l||r|r||r|r|}
\hline
\multicolumn{2}{|c||}{ }
 & 
\multicolumn{2}{|c||}{ $ A_{A}^{(2)} $ }
 & 
\multicolumn{2}{|c|}{ $ A_{NA}^{(2)} $ }
\\\hline
input
 & 
P.A.
 & 
\multicolumn{1}{|c|}{ $ z $ }
 & 
\multicolumn{1}{|c||}{ $ \omega $ }
 & 
\multicolumn{1}{|c|}{ $ z $ }
 & 
\multicolumn{1}{|c|}{ $ \omega $ }
\\\hline
6
 & 
[3/2]
 & 
 $ 0.7811 $ 
 & 
 --- 
 & 
 $ -3.614 $ 
 & 
 --- 
\\
6
 & 
[2/3]
 & 
 $ 0.7829 $ 
 & 
 --- 
 & 
 $ -3.614 $ 
 & 
 --- 
\\\hline
7
 & 
[4/2]
 & 
 $ 0.7334 $ 
 & 
 --- 
 & 
 $ -3.626 $ 
 & 
 --- 
\\
7
 & 
[3/3]
 & 
 $ 0.7747 $ 
 & 
 --- 
 & 
 $ -3.618 $ 
 & 
 --- 
\\
7
 & 
[2/4]
 & 
 $ 0.7594 $ 
 & 
 --- 
 & 
 $ -3.622 $ 
 & 
 --- 
\\
\hline
\end{tabular}
