Bip39 standalone https://www.sbnation.com/users/typhanhmdy Mycelium - A cell wallet that supports BIP39 seed phrases and it has Innovative capabilities for power consumers. For words that have only 3 letters, there is not any 4th letter. One example is Together with the word “incorporate”, there won't be any a lot more letters https://pixabay.com/users/51089543/