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