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