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