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