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