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