This tool helps you recover a BIP39 mnemonic when a small number of words are missing. You provide: 1.A known Bitcoin receiving address 2.A mnemonic word list 3. Question marks ? for unknown word positions 4 .An optional candidate word list 5..An optional BIP39 passphrase 6. An address index range to check The script then tries possible word combinations, validates each candidate mnemonic using the BIP39 checksum, derives BIP84 Bitcoin addresses, and checks whether any derived address matches the target address.