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