I took the index of the words, converted the number to binary, included 3 zeros, calculated the sha256 digest, took the initial part of the hexadecimal to convert it to binary, added a few zeros for the 8 digits of the binary and received 00000010011 which interprets to 19 in https://mysocialguides.com/story5041373/5-simple-techniques-for-bip39-seed-phrase