I took the index on the words, transformed the range to binary, additional three zeros, calculated the sha256 digest, took the initial Portion of the hexadecimal to transform it to binary, included a few zeros towards the 8 digits on the binary and got 00000010011 which translates to 19 in https://ilovebookmarking.com/story18816931/5-simple-techniques-for-bip39-seed-phrase