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