I took the index of your words, converted the selection to binary, included a few zeros, calculated the sha256 digest, took the very first Component of the hexadecimal to transform it to binary, additional 3 zeros to the 8 digits in the binary and received 00000010011 which translates to 19 https://mysterybookmarks.com/story18993046/considerations-to-know-about-bip39-seed-phrase-generator