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