I took the index on the words, converted the quantity to binary, included 3 zeros, calculated the sha256 digest, took the initial Element of the hexadecimal to transform it to binary, added 3 zeros to the 8 digits on the binary and obtained 00000010011 which interprets to 19 in decimal. https://livebookmarking.com/story18809779/5-simple-techniques-for-bip39-seed-phrase