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