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