\begin{table}%T2
%\centering
\par
\caption{Energy levels of ring-chain isomer of C$_5$H$_2$.}\label{t2}
\begin{tabular}{rrr|r|rrr|r}
\hline
\hline
$J$ & $k_a$ & $k_c$ & \multicolumn{1}{c|}{$E~(\mbox{cm}^{-1})$} &$J$ & $k_a$ & 
$k_c$ & \multicolumn{1}{c}{$E~(\mbox{cm}^{-1})$}\\
\hline
  0 &   0 &   0 &   0.000 &
  1 &   0 &   1 &   0.218 \\
  2 &   0 &   2 &   0.654 &
  1 &   1 &   1 &   1.259 \\
  1 &   1 &   0 &   1.270 &
  3 &   0 &   3 &   1.308 \\
  2 &   1 &   2 &   1.685 & 
  2 &   1 &   1 &   1.716 \\
  4 &   0 &   4 &   2.180 &
  3 &   1 &   3 &   2.324 \\
  3 &   1 &   2 &   2.386 &
  4 &   1 &   4 &   3.175 \\
  5 &   0 &   5 &   3.269 &
  4 &   1 &   3 &   3.279 \\
  5 &   1 &   5 &   4.239 &
  5 &   1 &   4 &   4.395 \\
  6 &   0 &   6 &   4.575 &
  2 &   2 &   1 &   4.840 \\
  2 &   2 &   0 &   4.840 & 
  3 &   2 &   2 &   5.494 \\
  3 &   2 &   1 &   5.494 &
  6 &   1 &   6 &   5.516 \\
  6 &   1 &   5 &   5.734 &
  7 &   0 &   7 &   6.097 \\
  4 &   2 &   3 &   6.366 &
  4 &   2 &   2 &   6.366 \\
  7 &   1 &   7 &   7.006 &
  7 &   1 &   6 &   7.296 \\
  5 &   2 &   4 &   7.457 & 
  5 &   2 &   3 &   7.457 \\
  8 &   0 &   8 &   7.835 &
  8 &   1 &   8 &   8.707 \\
  6 &   2 &   5 &   8.765 &
  6 &   2 &   4 &   8.765 \\
  8 &   1 &   7 &   9.081 &
  9 &   0 &   9 &   9.789 \\
  7 &   2 &   6 &  10.291 &
  7 &   2 &   5 &  10.301 \\
  9 &   1 &   9 &  10.621 &
  3 &   3 &   1 &  10.726 \\
  3 &   3 &   0 &  10.726 &
  9 &   1 &   8 &  11.088 \\
  4 &   3 &   2 &  11.598 &
  4 &   3 &   1 &  11.598 \\
 10 &   0 &  10 &  11.958 &
  8 &   2 &   7 &  12.035 \\
  8 &   2 &   6 &  12.051 & 
  5 &   3 &   3 &  12.689 \\
  5 &   3 &   2 &  12.689 &
 10 &   1 &  10 &  12.747 \\
 10 &   1 &   9 &  13.318 &
  9 &   2 &   8 &  13.996 \\
  6 &   3 &   4 &  13.998 & 
  6 &   3 &   3 &  13.998 \\
  9 &   2 &   7 &  14.021 &
 11 &   0 &  11 &  14.340 \\
 11 &   1 &  11 &  15.086 &
  7 &   3 &   5 &  15.525 \\
  7 &   3 &   4 &  15.525 &
 11 &   1 &  10 &  15.770 \\
 10 &   2 &   9 &  16.175 &
 10 &   2 &   8 &  16.213 \\
  8 &   3 &   6 &  17.271 &
  8 &   3 &   5 &  17.271 \\
\hline
\end{tabular}
\end{table}