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