I took the index of your words, transformed the amount to binary, additional three zeros, calculated the sha256 digest, took the first Portion of the hexadecimal to convert it to binary, included three zeros for the eight digits with the binary and bought 00000010011 which translates to 19 in decimal. https://singnalsocial.com/story3977941/the-fact-about-valid-bip39-seed-phrase-that-no-one-is-suggesting