Need help with building mask

[singhn]

Thanks slyexe, basically, i interchange the some chars with numbers and some with special for example, E with 3, o with 0, i with !, but not all, just some. I do tend to use other special chars as well not just !. here is an example of one of my passwords H3lL0_w0rLD-2oo7!! but that's simpler one, i did use longer password on the access db.

If you can guide me with how can i create a rule set which can possible crack 8 to 24 alpha numeric with special char password, I can spin up p2.16xlarge instance, and see the estimates.

Thanks