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