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