I took the index of the words, transformed the selection to binary, added 3 zeros, calculated the sha256 digest, took the first Portion of the hexadecimal to convert it to binary, additional three zeros on the eight digits on the binary and obtained 00000010011 which translates to 19 in decimal. https://hotbookmarkings.com/story18822936/the-greatest-guide-to-seed-phrase-bip39