Strings Generation Scenarios
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I would like to create various string values for about 3 different scenarios. 

1. Generate values like i.e:AA, AB,AC,AD...AZ,BA,BB,BC... BZ, CA, CB,CC....till ZZ string value.
2. Generate values like A/1, A/2, A/3....A/99, B/1, B/2, B/3...B/99,C/1...C/99 UNTIL Z/99 STRING VALUES
3.Generate values like AA/1, AA/2, AA/3....AA/99, AB/1, AB/2, AB/3...AB/99,C/1...AC/99 UNTIL Z/99 

There should be an input i.e for a starting and end range i.e
Enter strat character: AA/4
Enter End Character AA/3
Generate? (Y/N)

and it should output to the screen
Thanks