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