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