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