Four galaxies included in our sample, shown in the first row. The model fitted using GALFIT for the corresponding galaxy above it is in the second row. The third row gives the residual image of the corresponding galaxy above it. Each column of figures gives an example of galaxies classified as strong both-sided, weak both-sided, one-sided, and control, respectively, from left to right. The white scale bar marks the scale of 10 arcsec.