I took the index of your words, transformed the number to binary, added 3 zeros, calculated the sha256 digest, took the first Component of the hexadecimal to convert it to binary, added three zeros to your 8 digits of the binary and acquired 00000010011 which interprets to 19 in decimal. https://socialwoot.com/story20434704/the-5-second-trick-for-ledger-seed-phrase-bip39