Using Regex to swap some letters and numbers around : <p>I'm trying to use RegEx in vb.net to swap a pattern of letters and numbers around and am just having no luck in understanding how to use RegEx or if it is even possible with RegEx.</p>

<p>I have a string that looks like this "blah blah ABCXY20 blah blah" and I need to change it to "blah blah ABC20XY blah blah"</p>

<p>So there is other text before and after the part I need to work with that I just need to stay how it is. I'm just interested in moving the "XY" letters to after the number. It may not be the actual letters "ABC" or "XY" it could be a different pattern, but whatever it is, the pattern is always consistent or the same three letters then the same two letters then a number or arbitary length.</p>
