I took the index of the words, transformed the variety to binary, added three zeros, calculated the sha256 digest, took the 1st Section of the hexadecimal to convert it to binary, added three zeros to your eight digits in the binary and obtained 00000010011 which translates to 19 in decimal. https://ilovebookmark.com/story18745808/new-step-by-step-map-for-ledger-seed-phrase-bip39