I took the index on the words, converted the variety to binary, additional 3 zeros, calculated the sha256 digest, took the 1st Component of the hexadecimal to transform it to binary, extra a few zeros to your eight digits of your binary and bought 00000010011 which interprets to 19 in https://hyperbookmarks.com/story18860812/facts-about-bip39-seed-phrase-github-revealed