Examples of various folded light curves in region B of the versus diagram, with the residual folded light curve of each source plotted in a smaller panel below the panel of each folded light curve. The colors of the models are the same as in Fig. 6. The three top examples, ordered from top to down with increasing values, illustrate cases where Gaussian or cosine functions are not adequate enough to describe the light curve geometries of the eclipses or inter eclipses variability. The two bottom examples illustrate cases that require an additional physical effect not taken into account in the current two-Gaussian models. The upper example shows a case with a total eclipse, and the lower example a case with reflection. The positions of the sources in the versus diagram are shown in Fig. 15.