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