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