I took the index in the words, converted the amount to binary, extra 3 zeros, calculated the sha256 digest, took the 1st Element of the hexadecimal to transform it to binary, included a few zeros for the 8 digits from the binary and got 00000010011 which translates to 19 in https://socialrator.com/story9502551/examine-this-report-on-bip39-mnemonic-phrase-tool