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