I took the index from the words, transformed the number to binary, extra a few zeros, calculated the sha256 digest, took the initial Portion of the hexadecimal to transform it to binary, added 3 zeros to your 8 digits on the binary and bought 00000010011 which translates to 19 in https://scrapbookmarket.com/story19034160/a-secret-weapon-for-bip39-words-to-numbers