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