I took the index with the words, transformed the number to binary, added three zeros, calculated the sha256 digest, took the very first Portion of the hexadecimal to transform it to binary, extra a few zeros towards the 8 digits of your binary and bought 00000010011 which translates to 19 https://wiishlist.com/story20263188/invalid-bip39-phrase-things-to-know-before-you-buy