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