I took the index in the words, transformed the variety to binary, added 3 zeros, calculated the sha256 digest, took the main part of the hexadecimal to transform it to binary, extra a few zeros into the eight digits from the binary and acquired 00000010011 which translates to 19 in https://bookmarkick.com/story19061064/detailed-notes-on-copyright-wallet-seed-phrase-out-of-bip39