I took the index with the words, transformed the selection to binary, additional a few zeros, calculated the sha256 digest, took the first Element of the hexadecimal to convert it to binary, extra a few zeros on the 8 digits with the binary and acquired 00000010011 which translates to 19 https://socialioapp.com/story4441795/facts-about-bip39-seed-phrase-word-list-revealed