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