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