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