I took the index in the words, transformed the quantity to binary, extra three zeros, calculated the sha256 digest, took the primary Component of the hexadecimal to transform it to binary, added three zeros on the eight digits in the binary and bought 00000010011 which interprets to 19 in decimal. https://onelifesocial.com/story4382744/examine-this-report-on-bip39-mnemonic-phrase-tool