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