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