I took the index on the words, converted the quantity to binary, added 3 zeros, calculated the sha256 digest, took the primary part of the hexadecimal to convert it to binary, included a few zeros for the 8 digits in the binary and bought 00000010011 which translates to 19 in https://iwanttobookmark.com/story19259178/helping-the-others-realize-the-advantages-of-bip39-mnemonic-phrase-tool