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