Bip39 Standard. As palavras desta frase são selecionadas de uma lista definida de 2048 palavras, que pode ser acessada aqui ou listada abaixo: For words that only have 3 letters, there isn't any 4th letter. For instance Along with the word “add”, there are no much more letters Later on https://directorylandia.com/listings628518/bip39-passphrase-https-linktr-ee-bip39-bip39-passphrase-generator-fundamentals-explained