I took the index with the words, transformed the variety to binary, included 3 zeros, calculated the sha256 digest, took the 1st Element of the hexadecimal to transform it to binary, extra a few zeros to your eight digits on the binary and acquired 00000010011 which translates to 19 in https://maroonbookmarks.com/story18766612/the-invalid-bip39-phrase-diaries