I took the index on the words, converted the amount to binary, additional three zeros, calculated the sha256 digest, took the primary Component of the hexadecimal to transform it to binary, extra 3 zeros for the eight digits on the binary and obtained 00000010011 which translates to 19 in decimal. https://wise-social.com/story4396367/facts-about-bip39-seed-phrase-word-list-revealed