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