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