I have a set of data that I need to sort out. This data contains
sequences that need to be grouped so that we would have the fewest runs
possible. There are 28 special identifiers and the sequences may or may
not have more than one of these identifiers. As I have already said, I
need to find a way to group the 18 sequences so that we can be most
efficient in running them.

If you need more info before you can help me out, please ask. I realize
that I may have been vague about what I need....

Thanks,

Mike