More than 4 character sets for Mask attacks

[Centurio]

Yeah, I understand. Sometimes I wish myself a brutforce attack with the possibility to limit the how often the same character can be used per candidate. Let's say a Z only can used once in a candidate where as a e can be used max 3 times.

Like this ZZZZZZZZZ ZZZZZZZZa ZZZZeeeeZ can be avoided.