Rules based attack sha256

[valerio_mc]

Ok i gave a look at PACK and it's more or less what i need, it do everything i asked for but it doesn't provide me to make something like --minvocal or --mincharset . I think that a configuration like this would be very usefull to reduce the number of all possible keyspace. Is there a way to do it ? I wanna make my charset and set that i wanna find at least two values coming from my charset.