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