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