Bip39 online https://zenwriting.net/keenanctdp/how-to-create-a-bip39-seed-a-step-by-step-guide D'CENT Biometric Wallet - A components wallet having a biometric authentication feature, supporting BIP39 seed phrases and offering an added layer of security. For words that only have 3 letters, there is no 4th letter. By way of example With all the word “add”, there aren't any https://sb-bookmarking.com/story20087461/bip39-js-5-simple-statements-about-bip39-converter-explained-https-t-me-bip39-chat