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