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