I took the index of the words, converted the range to binary, extra 3 zeros, calculated the sha256 digest, took the very first Element of the hexadecimal to transform it to binary, extra 3 zeros towards the eight digits on the binary and acquired 00000010011 which interprets to 19 in https://bookmarkcolumn.com/story18631373/the-greatest-guide-to-seed-phrase-bip39