Bip39 implementation http://www.mediafire.com/file/uilrjfajg2ami24/pdf-14673-57158.pdf A BIP39 seed phrase produced with appropriate randomness cannot be guessed via brute pressure, mainly because you will discover simply too many permutations. Some wallets can import several seed phrases and many only have a single standard. Remember that not just about every seed phrase is identical https://digibookmarks.com/story20055856/is-bip39-safe-the-5-second-trick-for-bip39-compatible-wallet-https-dzen-ru-bip39-phrase-com