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