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