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