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