I took the index with the words, transformed the number to binary, extra 3 zeros, calculated the sha256 digest, took the initial A part of the hexadecimal to convert it to binary, additional 3 zeros into the eight digits on the binary and bought 00000010011 which translates to 19 in https://listbell.com/story8544373/little-known-facts-about-bip39-seed-phrase-list