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Published online by Cambridge University Press: 13 May 2016
The analysis of the line ratios along the profiles show that CIV/Lα line ratio is low in the center of lines but high in the wings although the Lα/Hβ line ratio has changed the opposite way. The line ratios have been modeled using the photoionization code CLOUDY. On the bases of the photoionization modeling along the line profiles we discuss the possible geometry of the emitted gas.