I took the index of the words, transformed the number to binary, extra three zeros, calculated the sha256 digest, took the initial Component of the hexadecimal to transform it to binary, added 3 zeros into the eight digits of the binary and bought 00000010011 which translates to 19 in decimal. https://bookmarkuse.com/story18650420/helping-the-others-realize-the-advantages-of-bip39-mnemonic-phrase-tool