I took the index in the words, converted the number to binary, additional 3 zeros, calculated the sha256 digest, took the primary Component of the hexadecimal to transform it to binary, extra 3 zeros on the 8 digits from the binary and got 00000010011 which translates to 19 in decimal. https://totalbookmarking.com/story18869421/new-step-by-step-map-for-ledger-seed-phrase-bip39