I took the index of the words, converted the number to binary, extra 3 zeros, calculated the sha256 digest, took the first Section of the hexadecimal to convert it to binary, included a few zeros for the eight digits in the binary and received 00000010011 which interprets to 19 in https://bookmarktiger.com/story18948006/considerations-to-know-about-bip39-seed-phrase-generator