I took the index of the words, transformed the range to binary, additional 3 zeros, calculated the sha256 digest, took the first Portion of the hexadecimal to transform it to binary, included 3 zeros into the eight digits of the binary and obtained 00000010011 which translates to 19 in decimal. https://thegreatbookmark.com/story18992805/the-5-second-trick-for-ledger-seed-phrase-bip39