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