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