I took the index in the words, converted the amount to binary, included 3 zeros, calculated the sha256 digest, took the initial Component of the hexadecimal to transform it to binary, included a few zeros to the eight digits on the binary and obtained 00000010011 which interprets to 19 in https://friendlybookmark.com/story18732390/5-simple-techniques-for-bip39-word-list-pdf