I took the index in the words, converted the variety to binary, extra a few zeros, calculated the sha256 digest, took the main part of the hexadecimal to convert it to binary, added 3 zeros for the eight digits on the binary and received 00000010011 which translates to 19 in https://tetrabookmarks.com/story18835407/5-simple-techniques-for-bip39-seed-phrase