Bip39 Words. Recall, there is absolutely no this kind of issue to be a “Improper” passphrase. Each diverse passphrase you enter is really a completely new wallet. Be cautious when recovering your seed having a passphrase. BIP39 specifies a list of 2048 words from which the mnemonic phrase is picked. https://onelifesocial.com/story4187545/bip39-passphrase-https-linktr-ee-bip39-about-ian-coleman-bip39