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