Nobody/Anonymous - 2003-03-31

Hi,

I've a list of strings which contain substrings like this:

ABC, XYZ,PR1,PR12,aPR1,PR23a,...

I want to find only PR1,PR12.
The pattern should be : \<PR\d{1,2}[^a-zA-Z]*
But PR23a is also in the list. Why?
thx,
Oliver