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