I took the index of your words, transformed the quantity to binary, included 3 zeros, calculated the sha256 digest, took the primary A part of the hexadecimal to transform it to binary, extra 3 zeros into the 8 digits in the binary and acquired 00000010011 which translates to 19 in https://bookmark-nation.com/story18831152/an-unbiased-view-of-bip39-seed-phrase-github