I took the index on the words, transformed the amount to binary, added a few zeros, calculated the sha256 digest, took the very first Section of the hexadecimal to transform it to binary, added 3 zeros into the 8 digits with the binary and got 00000010011 which translates to 19 https://thebookmarkid.com/story19111218/the-invalid-bip39-phrase-diaries