I took the index with the words, transformed the quantity to binary, extra 3 zeros, calculated the sha256 digest, took the main Portion of the hexadecimal to convert it to binary, added 3 zeros to the eight digits of the binary and acquired 00000010011 which translates to 19 in decimal. https://guideyoursocial.com/story4075010/the-fact-about-bip39-seed-phrase-word-list-that-no-one-is-suggesting