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