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