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