I took the index of the words, transformed the variety to binary, extra 3 zeros, calculated the sha256 digest, took the initial Element of the hexadecimal to transform it to binary, extra three zeros to your 8 digits with the binary and got 00000010011 which translates to 19 in decimal. https://thesocialvibes.com/story4332960/examine-this-report-on-bip39-mnemonic-phrase-tool