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