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