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