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