I took the index in the words, converted the variety to binary, extra 3 zeros, calculated the sha256 digest, took the very first Portion of the hexadecimal to convert it to binary, additional three zeros towards the 8 digits from the binary and bought 00000010011 which interprets to 19 in https://social4geek.com/story4372098/little-known-facts-about-bip39-seed-phrase-list