Your goal is to find the secret four-color code. The following colors are possible: blue, purple, red, white, black, brown.
Some guesses have already been made. I will provide feedback for each guess made with which it is possible to unambigiously determine the secret code.

Previous Guesses:
Guess: ['white', 'black', 'blue', 'red']. Hint: three colors are in the secret code but in the wrong positions.
Guess: ['blue', 'blue', 'purple', 'white']. Hint: three colors are in the secret code but in the wrong positions.
Guess: ['purple', 'white', 'red', 'blue']. Hint: three colors are in the correct positions.
A B C D
purple, red, purple, black black, black, brown, brown black, black, purple, black purple, white, black, blue