I took the index on the words, converted the number to binary, additional three zeros, calculated the sha256 digest, took the primary part of the hexadecimal to convert it to binary, extra 3 zeros for the eight digits with the binary and bought 00000010011 which translates to 19 in decimal. https://olivebookmarks.com/story18905420/the-ultimate-guide-to-bip39-seed-phrase-mnemonics-generator