I took the index of your words, converted the quantity to binary, added three zeros, calculated the sha256 digest, took the primary part of the hexadecimal to convert it to binary, extra a few zeros into the eight digits of your binary and obtained 00000010011 which interprets to 19 in https://bookmarkinglive.com/story19593587/new-step-by-step-map-for-bip39-english-words