I took the index on the words, transformed the variety to binary, included three zeros, calculated the sha256 digest, took the very first Component of the hexadecimal to convert it to binary, additional 3 zeros to the eight digits in the binary and received 00000010011 which interprets to 19 in https://total-bookmark.com/story18709867/examine-this-report-on-bip39-mnemonic-phrase-tool