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