I took the index from the words, converted the range to binary, added 3 zeros, calculated the sha256 digest, took the first Section of the hexadecimal to convert it to binary, included three zeros on the 8 digits of the binary and received 00000010011 which interprets to 19 in decimal. https://mysocialquiz.com/story4482737/the-ultimate-guide-to-bip39-seed-phrase-mnemonics-generator