Bip39 metal https://www.tumblr.com/generalllamacolor/787594721599078400/can-you-depend-on-online-bip39-generators-a Abra - A cell wallet that supports BIP39 seed phrases, providing both of those wallet and exchange functions for cryptocurrencies. For words that have only 3 letters, there isn't a 4th letter. By way of example With all the word “increase”, there won't be any extra letters https://opensocialfactory.com/story23565115/bip39-c-new-step-by-step-map-for-bip39-word-list-txt-https-dzen-ru-bip39-phrase-com