I took the index in the words, converted the quantity to binary, additional a few zeros, calculated the sha256 digest, took the primary Component of the hexadecimal to transform it to binary, included 3 zeros to your eight digits of the binary and obtained 00000010011 which interprets to 19 in https://monobookmarks.com/story18819083/the-5-second-trick-for-ledger-seed-phrase-bip39