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