x86 assembly language ---must use at least 1 function (in addition to _main or _start) and 2 string instructions

3 specific consonants, uppercase and lowercase. For example, I may choose s, c, and a, and your program would need to provide a count of uppercase and lowercase s, a count of uppercase and lowercase c, and a count of uppercase and lowercase a. Each of these counts should be provided for each string, and then for the total of the 2 strings

Your results should be stored in variables (though you may use registers for intermediary steps).

Your program must use at least 2 string instructions. You may use jump instructions and possibly loop instructions if needed.

You are required to use at least one function (in addition to _main or _start) where you pass in at least one variable. Your additional function is required to use registers in its operations.