Using a combo of masks and rules

[guthawt]

I should add I created a mask file for this, and it's not so bad when you only want to check for one "floating" mandatory character, but when throwing multiple into the mix the list of masks will get long and I'm not sure if there is anything to autogen that. So what I had the first time around in an hcmask file was this:

abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789!#$&-'",?1?1_?1?1?1?1?1?1?1?1?1?1
abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789!#$&-'",?1?1?1_?1?1?1?1?1?1?1?1?1
abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789!#$&-'",?1?1?1?5_?1?1?1?1?1?1?1?1
abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789!#$&-'",?1?1?1?1?1_?1?1?1?1?1?1?1
abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789!#$&-'",?1?1?1?1?1?1_?1?1?1?1?1?1
abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789!#$&-'",?1?1?1?1?1?1?1_?1?1?1?1?1
abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789!#$&-'",?1?1?1?1?1?1?1?1_?1?1?1?1
abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789!#$&-'",?1?1?1?1?1?1?1?1?1_?1?1?1
abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789!#$&-'",?1?1?1?1?1?1?1?1?1?1_?1?1
abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789!#$&-'",?1?1?1?1?1?1?1?1?1?1?1_?1

But maybe even this isn't the most efficient method..