Bip39 mnemonic code converter https://sergiouwfc622.fotosdefrases.com/exactly-how-to-generate-a-bip39-seed-a-step-by-step-guide A BIP39 seed phrase created with acceptable randomness can not be guessed by brute force, due to the fact there are simply too many permutations. For words that have only three letters, there is not any 4th letter. One example is with the word “include”, https://socialevity.com/story22382690/how-does-bip39-work-the-single-best-strategy-to-use-for-bip39-word-list-pdf-https-x-com-tundra838554