I took the index in the words, transformed the variety to binary, added three zeros, calculated the sha256 digest, took the main Section of the hexadecimal to transform it to binary, extra a few zeros to the eight digits in the binary and bought 00000010011 which interprets to 19 in https://iwanttobookmark.com/story19587700/the-fact-about-bip39-seed-phrase-word-list-that-no-one-is-suggesting