I have the following pattern,
and I wish to extract only a portion of it, i.e., the highlighted portions have to be trimmed off.
I am facing an issue when trying to detect the A and AX using Lookbehind. It tells me that the quantifier has to be fixed, so I am not able to zero into A while, I can do it easily for CT and AX.
Help would be most appreciated, thanks in advance!