Bip39. The passphrase isn't selected in the predefined list of 2048 words – it could be any word or phrase you decide on. None of those examples are concerned with arguments that you'd use for differing kinds of typos, tokenlists, and many others. If you'd like, You can even print https://webcastlist.com/story19783495/bip39-mnemonic-https-linktr-ee-bip39-a-review-of-bip39-words