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