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