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