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