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