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