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