I took the index in the words, transformed the number to binary, extra 3 zeros, calculated the sha256 digest, took the primary Portion of the hexadecimal to convert it to binary, added a few zeros to the eight digits from the binary and got 00000010011 which interprets to 19 in https://bookmarkingace.com/story18815482/bip39-phrase-generator-can-be-fun-for-anyone