I took the index in the words, transformed the selection to binary, additional three zeros, calculated the sha256 digest, took the first Section of the hexadecimal to convert it to binary, included a few zeros towards the 8 digits of the binary and acquired 00000010011 which interprets to 19 in https://socialwebconsult.com/story4394836/the-fact-about-bip39-seed-phrase-word-list-that-no-one-is-suggesting