I took the index from the words, converted the quantity to binary, additional 3 zeros, calculated the sha256 digest, took the main part of the hexadecimal to transform it to binary, included three zeros into the eight digits of the binary and bought 00000010011 which interprets to 19 in decimal. https://socialwoot.com/story20388245/examine-this-report-on-bip39-mnemonic-phrase-tool