Bip39 react https://www.bitsdujour.com/profiles/wWbptt Checksum generation: A checksum is created from this entropy making use of SHA-256 hashing, which helps confirm the mnemonic's integrity later on. For words that have only three letters, there is not any 4th letter. For example with the word “increase”, there aren't any much more letters https://list.ly/abregeouoh