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