I took the index of the words, transformed the quantity to binary, included a few zeros, calculated the sha256 digest, took the initial Component of the hexadecimal to convert it to binary, added three zeros on the 8 digits with the binary and got 00000010011 which translates to 19 in https://bookmark-search.com/story18854402/new-step-by-step-map-for-bip39-english-words