Bip39 Dictionary. Enhanced stability: By storing your keys offline, components wallets defend from online hacks and malware. For words that only have 3 letters, there is no 4th letter. For example Along with the word “add”, there won't be any more letters afterwards and so should be the word "insert". https://sweet-directory.com/listings13079495/bip39-mnemonic-https-linktr-ee-bip39-not-known-details-about-bip39-compatible-wallet