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