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