I took the index of the words, converted the selection to binary, included a few zeros, calculated the sha256 digest, took the 1st A part of the hexadecimal to convert it to binary, added 3 zeros into the eight digits from the binary and obtained 00000010011 which interprets to 19 https://apollobookmarks.com/story18973247/the-ultimate-guide-to-bip39-seed-phrase-mnemonics-generator