I took the index in the words, converted the variety to binary, extra 3 zeros, calculated the sha256 digest, took the initial Portion of the hexadecimal to transform it to binary, included 3 zeros to your 8 digits with the binary and acquired 00000010011 which interprets to 19 in decimal. https://bookmarks-hit.com/story19608781/bip39-phrase-generator-can-be-fun-for-anyone