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