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