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