I took the index from the words, transformed the amount to binary, added three zeros, calculated the sha256 digest, took the very first Portion of the hexadecimal to convert it to binary, added 3 zeros into the 8 digits on the binary and got 00000010011 which interprets to 19 in https://bookmarkbooth.com/story18822208/the-ultimate-guide-to-bip39-seed-phrase-mnemonics-generator