Bip39 docs https://files.fm/u/2eemhhak2q#design As it is possible to see, these are typically normal words that happen to be simple to shop or keep in mind. It isn't advised to keep in mind them, however it is drastically a lot easier than remembering a 64-character-long string of random quantities and letters. https://e-bookmarks.com/story6299581/bip39-vs-bip44-bip39-passphrase-generator-options-https-x-com-tundra838554