21. The invention set forth in claim 19 wherein said input character string and said directory of character strings are divided into parts, and wherein said recursive steps are performed individually, on each said part of said input string.
21. The invention set forth in claim 19 wherein said input character string and said directory of character strings are divided into parts, and wherein said recursive steps are performed individually, on each said part of said input string. 22. The invention set forth in claim 21 wherein said generated mismatched character string is dependent upon mismatches in both of said parts.