The Hα (left two columns) and Hβ (right two columns) line profiles for the three flare events. Columns (1) and (3) show the observed spectra (royal blue) with the reference spectrum overplotted (gray), while columns (2) and (4) show the residual spectra (gray dots) after subtraction of the reference, along with multi-Gaussian fits (dashed lines). The rows correspond to the multinight evolution of Event I (top), Event II (middle), and Event III (bottom), with observing dates and orbital phases labeled.