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