Your goal is to find the secret four-color code. The following colors are possible: black, brown, red, orange, pink, green.
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: ['pink', 'black', 'red', 'orange']. Hint: two colors are in the secret code but in the wrong positions.
Guess: ['black', 'brown', 'brown', 'red']. Hint: three colors are in the correct positions.
Guess: ['black', 'brown', 'black', 'green']. 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
black, brown, green, red black, green, brown, green brown, black, red, brown green, pink, red, orange