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