I took the index from the words, transformed the range to binary, extra 3 zeros, calculated the sha256 digest, took the very first Section of the hexadecimal to convert it to binary, included three zeros into the eight digits of your binary and obtained 00000010011 which interprets to 19 in https://expressbookmark.com/story19141691/the-5-second-trick-for-ledger-seed-phrase-bip39