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