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