Bip39 Mnemonic Generator. Increased protection: By storing your keys offline, hardware wallets protect from online hacks and malware. For words that have only three letters, there's no 4th letter. Such as With all the word “include”, there won't be any more letters afterwards and therefore should be the word "incorporate". https://gen-directory.com/listings13033323/bip39-vs-slip39-https-linktr-ee-bip39-bip39-passphrase-generator-fundamentals-explained