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