I took the index on the words, transformed the variety to binary, additional three zeros, calculated the sha256 digest, took the main Portion of the hexadecimal to transform it to binary, additional a few zeros towards the 8 digits in the binary and received 00000010011 which translates to 19 in https://bookmarkpagerank.com/story18858170/considerations-to-know-about-bip39-seed-phrase-generator