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