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