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