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