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