[Help] Password wordlist generating

[95]

im trying to generate every possible combination to crack a password, I already know a few hints on what the password is
it is 8 charachters long, the first 4 charchters are letters(a - z), some are lowercase some and some upercase, and the other 4 is numbers
is there any way to generate them??

[154]

Yes, look into jhontheripper. it has a module where u can enter some custom rules and generate every possible password!