I took the index of the words, transformed the amount to binary, additional a few zeros, calculated the sha256 digest, took the first Component of the hexadecimal to transform it to binary, extra 3 zeros on the eight digits of your binary and received 00000010011 which translates to 19 in https://bookmarklinkz.com/story18888011/the-definitive-guide-to-bip39-seed-phrase