I took the index from the words, converted the variety to binary, added 3 zeros, calculated the sha256 digest, took the 1st Component of the hexadecimal to convert it to binary, additional a few zeros for the eight digits with the binary and received 00000010011 which interprets to 19 in https://socialmediainuk.com/story20217833/an-unbiased-view-of-bip39-seed-phrase-github