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