I took the index of your words, converted the amount to binary, additional 3 zeros, calculated the sha256 digest, took the 1st Element of the hexadecimal to transform it to binary, extra 3 zeros into the eight digits of your binary and obtained 00000010011 which interprets to 19 in decimal. https://dftsocial.com/story19698996/the-5-second-trick-for-ledger-seed-phrase-bip39