I took the index of your words, transformed the variety to binary, included three zeros, calculated the sha256 digest, took the 1st A part of the hexadecimal to transform it to binary, added three zeros towards the 8 digits on the binary and got 00000010011 which interprets to 19 in https://bookmarkingalpha.com/story18827700/facts-about-bip39-seed-phrase-word-list-revealed