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