I took the index with the words, transformed the range to binary, extra 3 zeros, calculated the sha256 digest, took the first A part of the hexadecimal to convert it to binary, added three zeros for the 8 digits from the binary and got 00000010011 which translates to 19 in https://zbookmarkhub.com/story18998843/top-latest-five-bip39-seed-phrase-mnemonics-generator-urban-news