I took the index on the words, converted the number to binary, included 3 zeros, calculated the sha256 digest, took the very first Portion of the hexadecimal to transform it to binary, additional a few zeros to your 8 digits of the binary and got 00000010011 which interprets to 19 https://friendlybookmark.com/story19502869/the-invalid-bip39-phrase-diaries