Bip39 2048 words https://500px.com/p/alexzhiglatyxrnxb Checksum generation: A checksum is produced from this entropy using SHA-256 hashing, which aids validate the mnemonic's integrity afterwards. For words that only have 3 letters, there isn't a 4th letter. Such as with the word “increase”, there won't be any far more letters Later on https://bookmarkick.com/story20445162/bip39-bip44-compatible-software-wallet-the-single-best-strategy-to-use-for-bip39-word-list-pdf-https-www-youtube-com-channel-ucupxfytj0fb78sq55hu6ocw