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