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