Comparison of SN 2020pvb spectra before (a), around (b), and after (c) the maximum peak. We also include those of SNe 1994W, 2005cl, 2009kn, and 2011ht at similar epochs. The Hα profiles are enlarged on the right of each panel and shifted to the peak ((d), (e), and (f)). The Hα profiles of each SN match the colours of their label on the left. All spectra have been corrected for their host-galaxy recessional velocities and extinctions (values adopted from the literature).