Example of the complex decomposition of the [N II]+Hα wavelength band for object (SDSS J032525.36−060837.8) with a distinctly extended Hα BLR component (group b). The [N II]+Hα is decomposed into the [N II] and Hα core and wing components, and one Hα BLR component. The core components are denoted with the dotted line, and wing components and Hα BLR are shown with a solid line.