Bip39 app https://ameblo.jp/generate-bip39brooks/entry-12913353546.html D'CENT Biometric Wallet - A hardware wallet with a biometric authentication element, supporting BIP39 seed phrases and delivering an added layer of stability. For words that have only three letters, there is not any 4th letter. As an example Together with the word “increase”, there isn't any https://bookmarkcitizen.com/story20781387/bip39-import-helping-the-others-realize-the-advantages-of-bip39-recovery-tool-https-cutt-ly-uryc5rw7