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