Bip39 Wiki. It's worth noting that a seed phrase grants access to your private keys. Whilst private keys are cumbersome to work with and come in a string of 256 alphanumeric people, seed phrases are usually 12 or 24 words lengthy, and made up of regular words. This would make https://riverjueoy.wikifordummies.com/8300326/the_anatomy_of_a_bip39_phrase_entropy_words_and_stability