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