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