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