I took the index of your words, transformed the number to binary, extra 3 zeros, calculated the sha256 digest, took the very first Element of the hexadecimal to convert it to binary, included three zeros towards the 8 digits with the binary and bought 00000010011 which translates to 19 in https://socialbookmarkgs.com/story18866347/a-review-of-bip39-phrase-list