I took the index on the words, converted the selection to binary, extra 3 zeros, calculated the sha256 digest, took the initial Component of the hexadecimal to convert it to binary, added a few zeros for the eight digits of your binary and acquired 00000010011 which translates to 19 in https://mirrorbookmarks.com/story18758333/the-fact-about-bip39-seed-phrase-word-list-that-no-one-is-suggesting