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