I took the index from the words, transformed the variety to binary, added 3 zeros, calculated the sha256 digest, took the first Section of the hexadecimal to convert it to binary, added 3 zeros into the eight digits of the binary and acquired 00000010011 which interprets to 19 in decimal. https://myeasybookmarks.com/story4540467/fascination-about-invalid-bip39-phrase