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