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