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