I took the index with the words, transformed the number to binary, added 3 zeros, calculated the sha256 digest, took the first Section of the hexadecimal to transform it to binary, included three zeros on the 8 digits on the binary and bought 00000010011 which translates to 19 in decimal. https://thebookmarkplaza.com/story18961239/new-step-by-step-map-for-ledger-seed-phrase-bip39