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