I took the index with the words, converted the selection to binary, additional a few zeros, calculated the sha256 digest, took the initial Element of the hexadecimal to transform it to binary, additional a few zeros to the 8 digits in the binary and bought 00000010011 which interprets to 19 https://scrapbookmarket.com/story19034935/considerations-to-know-about-bip39-word-list-pdf