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