I took the index from the words, converted the variety to binary, added 3 zeros, calculated the sha256 digest, took the main Portion of the hexadecimal to transform it to binary, added 3 zeros to your eight digits on the binary and bought 00000010011 which translates to 19 in decimal. https://bookmarkingace.com/story19471073/5-simple-techniques-for-bip39-word-list-pdf