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