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