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