Bip39 Mnemonic. make use of the joined words as a mnemonic sentence. The next table describes the relation among the Original entropy For words that have only 3 letters, there isn't a 4th letter. One example is While using the word “increase”, there won't be any far more letters Later https://fab-directory.com/listings13171403/bip39-words-https-linktr-ee-bip39-the-ultimate-guide-to-bip39-vs-slip39