I took the index of the words, transformed the selection to binary, included a few zeros, calculated the sha256 digest, took the first A part of the hexadecimal to convert it to binary, added three zeros to the 8 digits from the binary and got 00000010011 which interprets to 19 https://bookmarkinginfo.com/story18802360/bip39-phrase-generator-can-be-fun-for-anyone