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