I took the index of the words, converted the range to binary, extra 3 zeros, calculated the sha256 digest, took the primary Section of the hexadecimal to transform it to binary, extra 3 zeros to the 8 digits in the binary and bought 00000010011 which interprets to 19 in decimal. https://geniusbookmarks.com/story18941005/ledger-seed-phrase-bip39-no-further-a-mystery