I took the index of the words, transformed the number to binary, additional a few zeros, calculated the sha256 digest, took the initial Portion of the hexadecimal to convert it to binary, added a few zeros for the 8 digits with the binary and bought 00000010011 which translates to 19 https://bookmarkspiral.com/story19053836/the-greatest-guide-to-seed-phrase-bip39