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