Enter a bip39 passphrase https://www.bitsdujour.com/profiles/wWbptt The binary data is split into more compact groups, each representing a amount. These quantities correspond to distinct words within the BIP39 word list. For words that only have 3 letters, there is absolutely no 4th letter. One example is While using the word “add”, https://www.bitsdujour.com/profiles/wWbptt