I took the index of the words, converted the selection to binary, extra a few zeros, calculated the sha256 digest, took the initial Portion of the hexadecimal to transform it to binary, added 3 zeros towards the eight digits on the binary and bought 00000010011 which translates to 19 in https://hotbookmarkings.com/story19040981/a-review-of-bip39-passphrase