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