I took the index of the words, converted the amount to binary, included three zeros, calculated the sha256 digest, took the very first Component of the hexadecimal to transform it to binary, added 3 zeros to the 8 digits on the binary and bought 00000010011 which translates to 19 in https://whitebookmarks.com/story19087546/helping-the-others-realize-the-advantages-of-bip39-mnemonic-phrase-tool