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