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