I took the index with the words, converted the range to binary, extra 3 zeros, calculated the sha256 digest, took the primary Section of the hexadecimal to convert it to binary, added a few zeros into the 8 digits from the binary and got 00000010011 which interprets to 19 in https://altbookmark.com/story20659502/top-guidelines-of-bip39-word-list-pdf