Bip85 vs bip39 https://www.bitsdujour.com/profiles/wWbptt Mycelium - A mobile wallet that supports BIP39 seed phrases and it has State-of-the-art features for energy users. For words that only have 3 letters, there is not any 4th letter. One example is Using the word “incorporate”, there won't be any much more letters Later https://bookmarkfavors.com/story5680651/bip39-passphrase-github-about-bip39-2048-words-https-www-youtube-com-channel-ucupxfytj0fb78sq55hu6ocw