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