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