I took the index on the words, transformed the number to binary, added 3 zeros, calculated the sha256 digest, took the primary part of the hexadecimal to transform it to binary, extra a few zeros to the eight digits on the binary and acquired 00000010011 which translates to 19 in https://todaybookmarks.com/story19142553/the-5-second-trick-for-ledger-seed-phrase-bip39