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