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