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