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