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