Bip39 Checksum. Keep in mind, there's no this sort of detail being a “Completely wrong” passphrase. Every different passphrase you enter can be a fully new wallet. Watch out when recovering your seed that has a passphrase. Entropy is an advanced attribute. Your mnemonic might be insecure if this characteristic https://bookmarklayer.com/story18801464/bip39-mnemonic-https-linktr-ee-bip39-the-basic-principles-of-bip39-mnemonic