Your goal is to find the secret four-color code. The following colors are possible: white, blue, yellow, green, black, brown.
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', 'blue', 'white', 'black']. Hint: two colors are in the correct positions.
Guess: ['white', 'white', 'black', 'black']. Hint: none of the guessed colors are present in the secret code.
Guess: ['green', 'green', 'blue', 'blue']. Hint: two colors are in the secret code but in the wrong positions.
Guess: ['yellow', 'blue', 'yellow', 'green']. 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
green, blue, blue, brown blue, green, brown, yellow yellow, black, yellow, yellow yellow, blue, green, brown