I took the index from the words, transformed the amount to binary, included a few zeros, calculated the sha256 digest, took the main A part of the hexadecimal to convert it to binary, additional three zeros for the 8 digits in the binary and obtained 00000010011 which interprets to 19 https://opensocialfactory.com/story19300581/5-simple-techniques-for-bip39-seed-phrase