I took the index with the words, transformed the amount to binary, extra 3 zeros, calculated the sha256 digest, took the main Element of the hexadecimal to convert it to binary, included a few zeros on the eight digits of your binary and received 00000010011 which interprets to 19 in https://siambookmark.com/story18881444/the-5-second-trick-for-ledger-seed-phrase-bip39