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