I took the index on the words, transformed the amount to binary, added 3 zeros, calculated the sha256 digest, took the main A part of the hexadecimal to transform it to binary, additional a few zeros to the 8 digits on the binary and obtained 00000010011 which interprets to 19 https://tbookmark.com/story18914468/examine-this-report-on-bip39-mnemonic-phrase-tool