I took the index in the words, converted the number to binary, additional three zeros, calculated the sha256 digest, took the 1st Section of the hexadecimal to convert it to binary, added 3 zeros to your 8 digits in the binary and acquired 00000010011 which translates to 19 in decimal. https://dirstop.com/story21956586/facts-about-bip39-seed-phrase-word-list-revealed