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