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