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