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