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