I took the index from the words, converted the amount to binary, included a few zeros, calculated the sha256 digest, took the primary Component of the hexadecimal to transform it to binary, extra a few zeros into the eight digits of your binary and bought 00000010011 which translates to 19 https://bookmarkinglife.com/story4376473/5-simple-techniques-for-bip39-word-list-pdf