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