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