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