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