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