As I attempted to point out about 6 posts up the thread, by quoting Jim Rutherford, the results will be random.
Not all of any block of numbers are this way; a low number might or might not have the prefix
This means some of the low numbers will have the ‘A’ and some won't have it, and in no order. Just with the posts so far this is supported, there will not be a defined line where they stop or start.
SaintWackoPaul ' 
Keep the Flame
