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