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