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