I took the index on the words, converted the quantity to binary, included a few zeros, calculated the sha256 digest, took the first part of the hexadecimal to convert it to binary, additional a few zeros to your 8 digits of your binary and bought 00000010011 which interprets to 19 https://exactlybookmarks.com/story18787781/the-definitive-guide-to-bip39-seed-phrase