Left: internal chemical abundances of H and He (upper panel) and the logarithm of the squared Brunt-Väisälä and Lamb frequencies (lower panel) in terms of the mass coordinate [−log (1−M_r/M_⋆)] corresponding to the pre-CNO flash template model with M_⋆ = 0.1821 M_⊙ and T_eff = 13 446 K whose location in the log T_eff−log g diagram is indicated in the left panel of Fig. 11. Right: same as in left panel, but for the pre-CNO flash template model with 0.2724 M_⊙ and T_eff = 16 481 K. Its location in the log T_eff−log g plane plane is indicated in the right panel of Fig. 11.