I took the index of the words, transformed the variety to binary, included 3 zeros, calculated the sha256 digest, took the main Element of the hexadecimal to convert it to binary, added a few zeros to the eight digits of the binary and obtained 00000010011 which interprets to 19 in https://funbookmarking.com/story18787816/the-fact-about-bip39-seed-phrase-word-list-that-no-one-is-suggesting