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