OK I thought this would be easy but I'm stumped.
I need to apply a style to the "x" character. So I only need to select "x" when its between a tab character and an en space. and not select it if it's on the right side of that en space. for example if there was an "x" in "gas" I would want to skip that one.
maybe where the x doesn't have [A-Za-z] before or after it?