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