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