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