The Importance of Obviation in a Complex Situation

Having focus be toward the left is pretty darn common, although you might get topic then focus and then the rest of the predicate. I think all of these are legitimate possibilities. You just have to pick the one you want. The third is a little bit chunky here in the sense that if you have a complex situations you want to contrast, like thinking about focus, it's useful to think about contrast to focus.