Forgot passphrase PGP, How to attack passphrase with Nasty

Hello guys, I have very weird problem because I'm almost sure that the passphrase I'm using for GPG is correct but it doesn't approve it, I guess it's like 1 letter wrong or something... So I though that I will try to attack this passphrase through Nasty but I just don't know how and I couldn't find any guide how to do that so here is my question, how do I launch Nasty to help me remember my passphrase? Btw Im wondering if it's possible it was 10 symbols password with small letters, big, signs and numbers? That's the error I get: gpg: Invalid passphrase; please try again ... gpg: Invalid passphrase; please try again ... gpg: encrypted with 4096-bit RSA key, ID ***, created *** "****" gpg: public key decryption failed: bad passphrase gpg: decryption failed: secret key not available