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