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