I took the index in the words, transformed the amount to binary, additional 3 zeros, calculated the sha256 digest, took the main Portion of the hexadecimal to transform it to binary, included three zeros towards the 8 digits on the binary and bought 00000010011 which translates to 19 in decimal. https://bookmarkstumble.com/story20709452/fascination-about-invalid-bip39-phrase