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