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