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