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