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