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