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