Analysis of the spectra 8 objects without a clear BLR and not covering the [O I] region (or with faint [O I] lines). Each spectrum is modeled with 2 methods, always using the [S II] lines as templates and (left) including a broad Hα component (right) or adding a wing to the [N II] and narrow Hα lines. The original spectrum is in black, the contribution of the individual narrow lines in blue (their sum is in green), and the residuals in red. In red we also show either the BLR component or the wings’ contribution.