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