I took the index of the words, transformed the range to binary, added 3 zeros, calculated the sha256 digest, took the very first A part of the hexadecimal to convert it to binary, added 3 zeros into the eight digits from the binary and obtained 00000010011 which interprets to 19 https://adsbookmark.com/story19063315/the-basic-principles-of-bip39-passphrase-generator