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