I took the index on the words, transformed the range to binary, added 3 zeros, calculated the sha256 digest, took the first A part of the hexadecimal to convert it to binary, additional 3 zeros to your eight digits of the binary and received 00000010011 which translates to 19 in https://socialbookmarkgs.com/story18855795/examine-this-report-on-bip39-passphrase