I took the index with the words, transformed the number to binary, extra a few zeros, calculated the sha256 digest, took the initial Portion of the hexadecimal to convert it to binary, extra 3 zeros towards the eight digits from the binary and acquired 00000010011 which translates to 19 in https://hotbookmarkings.com/story18847064/an-unbiased-view-of-bip39-seed-phrase-github