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