I took the index of your words, converted the variety to binary, additional 3 zeros, calculated the sha256 digest, took the primary Section of the hexadecimal to transform it to binary, added a few zeros to the eight digits of your binary and obtained 00000010011 which interprets to 19 in https://bookmarkswing.com/story20406759/the-definitive-guide-to-bip39-seed-phrase