Your goal is to find the secret four-color code. The following colors are possible: red, brown, blue, purple, black, white.
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', 'brown', 'red', 'purple']. Hint: two colors are in the secret code but in the wrong positions.
Guess: ['red', 'blue', 'blue', 'brown']. Hint: two colors are in the secret code but in the wrong positions.
Guess: ['purple', 'red', 'brown', 'black']. Hint: two colors are in the correct positions.
Guess: ['blue', 'red', 'white', 'black']. Hint: two colors are in the correct positions and one color is in the secret code but in the wrong positions.
A B C D
purple, blue, purple, blue blue, white, brown, black white, purple, purple, black black, black, white, purple