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