I took the index with the words, transformed the range to binary, extra a few zeros, calculated the sha256 digest, took the initial Portion of the hexadecimal to transform it to binary, additional three zeros towards the 8 digits in the binary and bought 00000010011 which translates to 19 in https://minibookmarks.com/story18789849/considerations-to-know-about-bip39-seed-phrase-generator