I took the index of your words, transformed the amount to binary, extra a few zeros, calculated the sha256 digest, took the initial Portion of the hexadecimal to transform it to binary, added 3 zeros to your eight digits of the binary and acquired 00000010011 which interprets to 19 in https://digibookmarks.com/story18951852/bip39-phrase-generator-can-be-fun-for-anyone