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