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