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