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