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