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Light curve synthesis for cataclysmic variables is discussed in a framework of a general model in which a normal star (red dwarf) flls its Roche lobe, while another component - a spherical star (white dwarf), is surrounded by an elliptical geometrically thick accretion disk. The comparison of four models is performed using the base program simulating an extended shock wave located along the edge of the gas flow near the outer disk edge (hot line). These models take into account the presence in the system 1) of the classical hot spot on the outer side of the disk, 2) of the hot line situated outside of the disk, 3) of both hot line and classical hot spot, and 4) of the hot line and a hot region towering over the outer side of the disk respectively. Results of light curve interpretation for some cataclysmic variables in different phases of their activity with these models are given.