Bip39 library https://telegra.ph/Producing-Custom-Bitcoin-Addresses-A-Take-A-Look-At-BIP39-Strategies-06-28 3a43fced052690635cc9fdce418514528b000dff3eaa5b986ea7be809062e775f2fe99c76733ff200b56fb70cac7c6ac7818b1e8139192a70fe274f5bf57fa46 For words that have only 3 letters, there is not any 4th letter. As an example with the word “incorporate”, there are no far more letters Later on and... https://social40.com/story6153823/bip39-tangem-indicators-on-bip39-standard-you-should-know-https-linktr-ee-bip39