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