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