I took the index of the words, converted the number to binary, included three zeros, calculated the sha256 digest, took the very first Portion of the hexadecimal to convert it to binary, added 3 zeros towards the eight digits in the binary and got 00000010011 which interprets to 19 in https://bookmarkindexing.com/story18700687/the-basic-principles-of-bip39-passphrase-generator