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