I took the index of the words, converted the variety to binary, added 3 zeros, calculated the sha256 digest, took the main part of the hexadecimal to transform it to binary, additional three zeros on the 8 digits with the binary and acquired 00000010011 which interprets to 19 in decimal. https://socialinplace.com/story4230401/little-known-facts-about-bip39-words