I took the index with the words, transformed the amount to binary, included three zeros, calculated the sha256 digest, took the 1st Element of the hexadecimal to transform it to binary, included a few zeros towards the eight digits with the binary and acquired 00000010011 which translates to 19 in https://socialstrategie.com/story4538432/the-fact-about-bip39-seed-phrase-word-list-that-no-one-is-suggesting