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