Comparison of the nebular spectrum of SN 2016hnk with our high-density delayed-detonation model in the rest frame assuming a redshift of z = 0.01610. The flux is in 10⁻¹⁸ erg s⁻¹ cm⁻² on the same scale as Fig. 19. The telluric region in the original spectrum is plotted in gray, around 7500 Å. The theoretical spectrum is dominated by a narrow, forbidden [Ca II] doublet at 7291 and 7324 Å above a quasi-continuum at about the 3% level formed by many transitions of mostly heavier elements including Fe, Co, Ni, and Cr.