An opposition fighter uses binoculars to observe the movement of Syrian regime forces
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Who is fighting whom in Syria?

Efforts to find a solution to the conflict in Syria have been complicated in part by the fragmented nature of the rebel groups fighting the government's forces.

Scores if rebel brigades and battalions have sprung up over the past two years, some with conflicting agendas and ideologies, without any cohesive control.

The BBC's Lina Sinjab reports on who the different warring factions are and where they operate.

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