I took the index from the words, converted the variety to binary, extra 3 zeros, calculated the sha256 digest, took the 1st Component of the hexadecimal to transform it to binary, included three zeros to the 8 digits of your binary and got 00000010011 which interprets to 19 in decimal. https://thesocialvibes.com/story4296822/the-invalid-bip39-phrase-diaries