Bip39 is not defined https://penzu.com/p/2ea6922b70254307 BIP85: A more recent proposal making it possible for the deterministic derivation of a number of BIP39 mnemonic seeds from a master seed. For words that only have three letters, there is no 4th letter. By way of example Together with the word “insert”, there https://bookmarkstown.com/story20075940/bip39-word-list-not-known-factual-statements-about-bip39-word-list-txt-https-dzen-ru-bip39-phrase-com