I took the index on the words, transformed the selection to binary, extra a few zeros, calculated the sha256 digest, took the initial part of the hexadecimal to convert it to binary, included a few zeros to the 8 digits of your binary and bought 00000010011 which interprets to 19 https://bookmarkusers.com/story18635138/bip39-phrase-generator-can-be-fun-for-anyone