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