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