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