I took the index from the words, converted the range to binary, additional a few zeros, calculated the sha256 digest, took the primary Section of the hexadecimal to transform it to binary, additional 3 zeros to the 8 digits of your binary and received 00000010011 which interprets to 19 in https://thebookmarkking.com/story18952013/new-step-by-step-map-for-ledger-seed-phrase-bip39