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