Anyone can teach me how to make a 4 digit permutation form ?

I would wish that to insert into access database, using asp/vbscript.

example: when 4 digit have insert to the text field as look like this [1][1][1][2] with box checked [x] permutation. after submit it will auto generate the 4 digits as 1112,1121,1211,2111 (no duplicate) into my database.