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