I took the index of the words, converted the quantity to binary, added three zeros, calculated the sha256 digest, took the main A part of the hexadecimal to convert it to binary, added 3 zeros on the eight digits on the binary and acquired 00000010011 which translates to 19 in https://bookmarkusers.com/story18777612/5-simple-techniques-for-bip39-seed-phrase