I took the index of the words, converted the amount to binary, included three zeros, calculated the sha256 digest, took the 1st A part of the hexadecimal to convert it to binary, additional a few zeros towards the 8 digits in the binary and bought 00000010011 which translates to 19 https://listbell.com/story8722709/invalid-bip39-phrase-things-to-know-before-you-buy