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