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