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