I took the index from the words, converted the amount to binary, additional three zeros, calculated the sha256 digest, took the primary part of the hexadecimal to transform it to binary, additional 3 zeros into the 8 digits in the binary and got 00000010011 which translates to 19 in decimal. https://push2bookmark.com/story18982792/the-2-minute-rule-for-bip39-all-words