Bip39 length https://www.demilked.com/author/gobnettlmz/ The get from the mnemonic phrase issues. For those who mess up the purchase then You can't Get better your wallet. Your resources will be misplaced permanently. Ensure you have an appropriate backup. For words that have only three letters, there is no 4th letter. Such as https://ilovebookmark.com/story20322399/dbs-unusual-addresses-how-much-you-need-to-expect-you-ll-pay-for-a-good-bip39-english-word-list-https-t-me-bip39-chat