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