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