Bip39 mnemonic online https://www.storeboard.com/myrtierisaliti 3a43fced052690635cc9fdce418514528b000dff3eaa5b986ea7be809062e775f2fe99c76733ff200b56fb70cac7c6ac7818b1e8139192a70fe274f5bf57fa46 For words that have only 3 letters, there is absolutely no 4th letter. By way of example with the word “include”, there won't be any more letters afterwards and so must be the word "incorporate"... https://squareblogs.net/edelinepge/using-python-to-produce-a-bip39-mnemonic-a-developers-point-of-view