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