Filter Alpha and Numeric character sets.

[sicSRT8]

Is it possible to use a calculation like (Filter ABCDEFG....)

But specify the sequence and length of numeric and alphabet characters.

Example 1

Relating the initials to specific character sequences thru drop downs. I have it set to read the last example but I have multiple sequences and lengths that vary per "initials". I use the Filter ABCDEF... but not sure if adding the just 1234567890 will work with alpha characters.

Example 2

"AB" to J098374 filter all sets with J0

"AC" to 20090505 filter all sets 20090505 starting with 2009 and 8 characters long.

"AD" to AD20090505 filter abcdef.... work but can I add the others into one calc.

I really hope this makes sense to the developers here... Thank you in advance.