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