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