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