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