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