I took the index from the words, converted the amount to binary, extra 3 zeros, calculated the sha256 digest, took the initial Element of the hexadecimal to transform it to binary, added three zeros to the 8 digits from the binary and bought 00000010011 which interprets to 19 in decimal. https://one-bookmark.com/story18756566/the-fact-about-valid-bip39-seed-phrase-that-no-one-is-suggesting