Bip39 Github. Now that we have reviewed the basics, now let's look at the major ways that wallet passphrases can defend your copyright. For words that have only 3 letters, there is absolutely no 4th letter. For example While using the word “add”, there aren't any far more letters afterwards https://directoryunit.com/listings13112893/bip39-word-list-https-linktr-ee-bip39-the-ultimate-guide-to-bip39-vs-slip39