I took the index on the words, converted the variety to binary, additional a few zeros, calculated the sha256 digest, took the 1st Section of the hexadecimal to convert it to binary, extra three zeros on the 8 digits on the binary and got 00000010011 which translates to 19 in https://admiralbookmarks.com/story19506018/5-simple-techniques-for-bip39-seed-phrase