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