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