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