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