I took the index in the words, converted the quantity to binary, extra 3 zeros, calculated the sha256 digest, took the first A part of the hexadecimal to transform it to binary, added 3 zeros to the eight digits from the binary and obtained 00000010011 which interprets to 19 in https://bookmarkspiral.com/story19059588/5-simple-techniques-for-bip39-word-list-pdf