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