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