I took the index on the words, converted the number to binary, extra 3 zeros, calculated the sha256 digest, took the first Component of the hexadecimal to transform it to binary, added 3 zeros to the eight digits on the binary and got 00000010011 which translates to 19 in decimal. https://socialrator.com/story9729773/considerations-to-know-about-bip39-seed-phrase-generator