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