I took the index on the words, transformed the variety to binary, added a few zeros, calculated the sha256 digest, took the 1st Portion of the hexadecimal to transform it to binary, extra a few zeros towards the 8 digits on the binary and got 00000010011 which interprets to 19 https://thekiwisocial.com/story4263296/the-definitive-guide-to-bip39-seed-phrase