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