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