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