Bip39 test vectors https://www.hometalk.com/member/176312665/elva1377050 The last stage of BIP-39 is producing the actual binary seed which is then used as being a master vital in BIP-32 deterministic wallet or using other techniques. Because of the cryptographic style of BIP-39, a weak passphrase doesn't lessen the safety of the other wallets https://single-bookmark.com/story20679955/bip39-wordlist-english-github-not-known-details-about-bip39-word-list-txt-https-linktr-ee-bip39