Wordlist based off of mask

[rad10]

The tool can already make masks based off of F-strings, but one thing that might be more useful to people is a way to get a wordlist based off a given mask. Hashcat and John will use a mask to make their own wordlist that can only be accessible to themselves, but there are many bruteforce tools that cannot even utilize masks to generate their own wordlists. What would be helpful is a way to take a mask and create all possible passwords based off of it.