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