I took the index of your words, converted the range to binary, additional a few zeros, calculated the sha256 digest, took the very first Element of the hexadecimal to transform it to binary, additional three zeros to the 8 digits of your binary and got 00000010011 which translates to 19 https://admiralbookmarks.com/story18883541/considerations-to-know-about-bip39-word-list-pdf