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