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