I took the index from the words, converted the number to binary, extra a few zeros, calculated the sha256 digest, took the 1st Component of the hexadecimal to transform it to binary, included a few zeros for the eight digits from the binary and received 00000010011 which translates to 19 https://binksites.com/story9229193/examine-this-report-on-bip39-mnemonic-phrase-tool