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