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