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