I took the index of the words, transformed the variety to binary, included a few zeros, calculated the sha256 digest, took the initial A part of the hexadecimal to transform it to binary, extra three zeros to your 8 digits of the binary and obtained 00000010011 which interprets to 19 https://sitesrow.com/story9471889/considerations-to-know-about-bip39-word-list-pdf