I took the index with the words, converted the amount to binary, extra a few zeros, calculated the sha256 digest, took the main A part of the hexadecimal to convert it to binary, extra 3 zeros into the 8 digits with the binary and bought 00000010011 which translates to 19 https://bookmarkingace.com/story18797476/the-fact-about-bip39-seed-phrase-word-list-that-no-one-is-suggesting