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