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