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