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