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