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