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