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