I took the index of your words, converted the range to binary, added a few zeros, calculated the sha256 digest, took the initial Portion of the hexadecimal to transform it to binary, added 3 zeros to the 8 digits of your binary and received 00000010011 which interprets to 19 in https://bookmarkinglive.com/story19844842/bip39-phrase-generator-can-be-fun-for-anyone