I took the index from the words, transformed the number to binary, extra three zeros, calculated the sha256 digest, took the primary Element of the hexadecimal to transform it to binary, added a few zeros towards the 8 digits in the binary and received 00000010011 which translates to 19 in https://bookmarkuse.com/story18859629/the-fact-about-bip39-seed-phrase-word-list-that-no-one-is-suggesting