**Table 5:** Interaction Indicators. Description of the columns: (1) Highly disturbed velocity field. (2) Disagreement between both sides of the rotation curve. (3) Central double nuclei. (4) Double kinematic gas component. (5) Changing position angle (PA) along major axis (MA). Rotation of external isophotes. (6) Gaseous vs stellar MA misalignment. The indicator is "on'' if the ranges of values do not intersect. (7) Tidal Tail, shell, filaments. (8) High $L_{\rm IR}$ . (9) Central activity. The symbol "+'' means that the indicator is "on'' otherwise the symbol is "-''. The symbol $''\times ''$ means that the data do not allow measurements.
$\begin{displaymath}\begin{tabular}{llllllllll} \hline \hline\noalign{\medskip } ... ...+ & + & + & -- & -- & + & -- & -- & -- \\ \hline \end{tabular}\end{displaymath}$

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