I took the index of your words, transformed the quantity to binary, extra three zeros, calculated the sha256 digest, took the primary part of the hexadecimal to transform it to binary, additional a few zeros towards the eight digits of the binary and acquired 00000010011 which interprets to 19 in https://total-bookmark.com/story18909176/new-step-by-step-map-for-bip39-english-words