I took the index of the words, converted the amount to binary, added a few zeros, calculated the sha256 digest, took the initial A part of the hexadecimal to convert it to binary, extra three zeros for the eight digits with the binary and got 00000010011 which translates to 19 https://sb-bookmarking.com/story18882139/new-step-by-step-map-for-bip39-english-words