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