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