I took the index of the words, transformed the quantity to binary, additional three zeros, calculated the sha256 digest, took the initial part of the hexadecimal to convert it to binary, additional 3 zeros on the 8 digits on the binary and bought 00000010011 which interprets to 19 in decimal. https://friendlybookmark.com/story19503320/the-invalid-bip39-phrase-diaries