I took the index on the words, transformed the variety to binary, added three zeros, calculated the sha256 digest, took the main A part of the hexadecimal to transform it to binary, additional a few zeros to the 8 digits in the binary and obtained 00000010011 which interprets to 19 https://bookmarks4seo.com/story18793419/little-known-facts-about-bip39-seed-phrase-list